diff --git a/api/build.gradle.kts b/api/build.gradle.kts
index b3c2762..29ce62f 100644
--- a/api/build.gradle.kts
+++ b/api/build.gradle.kts
@@ -23,6 +23,8 @@ dependencies {
     compileOnly("io.netty:netty-all:4.1.113.Final")
     // GSON
     compileOnly("com.google.code.gson:gson:${rootProject.properties["gson_version"]}")
+    // Fast util
+    compileOnly("it.unimi.dsi:fastutil:${rootProject.properties["fastutil_version"]}")
 }
 
 java {
diff --git a/api/src/main/java/net/momirealms/customnameplates/api/AbstractCNPlayer.java b/api/src/main/java/net/momirealms/customnameplates/api/AbstractCNPlayer.java
index cc9b47f..3538708 100644
--- a/api/src/main/java/net/momirealms/customnameplates/api/AbstractCNPlayer.java
+++ b/api/src/main/java/net/momirealms/customnameplates/api/AbstractCNPlayer.java
@@ -18,6 +18,11 @@
 package net.momirealms.customnameplates.api;
 
 import io.netty.channel.Channel;
+import it.unimi.dsi.fastutil.ints.Int2ObjectLinkedOpenHashMap;
+import it.unimi.dsi.fastutil.ints.Int2ObjectOpenCustomHashMap;
+import it.unimi.dsi.fastutil.ints.Int2ObjectOpenHashMap;
+import it.unimi.dsi.fastutil.objects.ObjectArrayList;
+import it.unimi.dsi.fastutil.objects.ObjectOpenHashSet;
 import net.momirealms.customnameplates.api.feature.Feature;
 import net.momirealms.customnameplates.api.feature.TimeStampData;
 import net.momirealms.customnameplates.api.feature.tag.TeamView;
@@ -51,11 +56,11 @@ public abstract class AbstractCNPlayer implements CNPlayer {
 
     private final TeamView teamView = new TeamView();
 
-    private final Map<Integer, TimeStampData<String>> cachedValues = new ConcurrentHashMap<>();
-    private final Map<Integer, WeakHashMap<CNPlayer, TimeStampData<String>>> cachedRelationalValues = new ConcurrentHashMap<>();
+    private final Int2ObjectOpenHashMap<TimeStampData<String>> cachedValues = new Int2ObjectOpenHashMap<>(64);
+    private final Int2ObjectOpenHashMap<WeakHashMap<CNPlayer, TimeStampData<String>>> cachedRelationalValues = new Int2ObjectOpenHashMap<>(64);
 
-    private final Map<Requirement, TimeStampData<Boolean>> cachedRequirements = new ConcurrentHashMap<>();
-    private final Map<Requirement, WeakHashMap<CNPlayer, TimeStampData<Boolean>>> cachedRelationalRequirements = new ConcurrentHashMap<>();
+    private final Int2ObjectOpenHashMap<TimeStampData<Boolean>> cachedRequirements = new Int2ObjectOpenHashMap<>(128);
+    private final Int2ObjectOpenHashMap<WeakHashMap<CNPlayer, TimeStampData<Boolean>>> cachedRelationalRequirements = new Int2ObjectOpenHashMap<>(128);
 
     private final Set<Feature> activeFeatures = new CopyOnWriteArraySet<>();
     private final Map<Placeholder, Set<Feature>> placeholder2Features = new ConcurrentHashMap<>();
@@ -71,7 +76,7 @@ public abstract class AbstractCNPlayer implements CNPlayer {
     @Override
     public List<Placeholder> activePlaceholdersToRefresh() {
         Placeholder[] activePlaceholders = activePlaceholders();
-        List<Placeholder> placeholderWithChildren = new ArrayList<>();
+        List<Placeholder> placeholderWithChildren = new ObjectArrayList<>();
         for (Placeholder placeholder : activePlaceholders) {
             childrenFirstList(placeholder, placeholderWithChildren);
         }
@@ -79,9 +84,9 @@ public abstract class AbstractCNPlayer implements CNPlayer {
     }
 
     @Override
-    public void forceUpdatePlaceholders(Set<Placeholder> placeholders, Set<CNPlayer> others) {
+    public void forceUpdatePlaceholders(Set<Placeholder> placeholders, Collection<CNPlayer> others) {
         if (placeholders.isEmpty()) return;
-        List<Placeholder> placeholderWithChildren = new ArrayList<>();
+        List<Placeholder> placeholderWithChildren = new ObjectArrayList<>();
         for (Placeholder placeholder : placeholders) {
             childrenFirstList(placeholder, placeholderWithChildren);
         }
@@ -224,7 +229,7 @@ public abstract class AbstractCNPlayer implements CNPlayer {
         Set<Placeholder> allPlaceholders = feature.allPlaceholders();
         feature2Placeholders.put(feature, allPlaceholders);
         for (Placeholder placeholder : allPlaceholders) {
-            Set<Feature> featureSet = placeholder2Features.computeIfAbsent(placeholder, k -> new HashSet<>());
+            Set<Feature> featureSet = placeholder2Features.computeIfAbsent(placeholder, k -> new ObjectOpenHashSet<>());
             featureSet.add(feature);
         }
     }
@@ -330,7 +335,7 @@ public abstract class AbstractCNPlayer implements CNPlayer {
 
     @Override
     public Placeholder[] activePlaceholders() {
-        HashSet<Placeholder> placeholders = new HashSet<>();
+        Set<Placeholder> placeholders = new ObjectOpenHashSet<>();
         for (Feature feature : activeFeatures) {
             placeholders.addAll(feature.activePlaceholders());
         }
@@ -341,7 +346,7 @@ public abstract class AbstractCNPlayer implements CNPlayer {
     public boolean isMet(Requirement[] requirements) {
         int currentTicks = MainTask.getTicks();
         for (Requirement requirement : requirements) {
-            TimeStampData<Boolean> data = cachedRequirements.get(requirement);
+            TimeStampData<Boolean> data = cachedRequirements.get(requirement.countId());
             if (data != null) {
                 if (data.ticks() + requirement.refreshInterval() > currentTicks) {
                     if (!data.data()) {
@@ -358,7 +363,7 @@ public abstract class AbstractCNPlayer implements CNPlayer {
             } else {
                 boolean satisfied = requirement.isSatisfied(this, this);
                 data = new TimeStampData<>(satisfied, currentTicks, true);
-                cachedRequirements.put(requirement, data);
+                cachedRequirements.put(requirement.countId(), data);
                 if (!satisfied) {
                     return false;
                 }
@@ -371,7 +376,7 @@ public abstract class AbstractCNPlayer implements CNPlayer {
     public boolean isMet(CNPlayer another, Requirement[] requirements) {
         int currentTicks = MainTask.getTicks();
         for (Requirement requirement : requirements) {
-            WeakHashMap<CNPlayer, TimeStampData<Boolean>> innerMap = cachedRelationalRequirements.computeIfAbsent(requirement, k -> new WeakHashMap<>());
+            WeakHashMap<CNPlayer, TimeStampData<Boolean>> innerMap = cachedRelationalRequirements.computeIfAbsent(requirement.countId(), k -> new WeakHashMap<>());
             TimeStampData<Boolean> data = innerMap.get(another);
             if (data != null) {
                 if (data.ticks() + requirement.refreshInterval() > currentTicks) {
@@ -421,8 +426,8 @@ public abstract class AbstractCNPlayer implements CNPlayer {
     }
 
     @Override
-    public Set<CNPlayer> nearbyPlayers() {
-        return new HashSet<>(trackers.keySet());
+    public Collection<CNPlayer> nearbyPlayers() {
+        return new ObjectArrayList<>(trackers.keySet());
     }
 
     @Override
@@ -446,7 +451,7 @@ public abstract class AbstractCNPlayer implements CNPlayer {
 
     @Override
     public Set<Integer> getTrackedPassengerIds(CNPlayer another) {
-        return Optional.ofNullable(trackers.get(another)).map(Tracker::getPassengerIDs).orElse(new HashSet<>());
+        return Optional.ofNullable(trackers.get(another)).map(Tracker::getPassengerIDs).orElse(new ObjectOpenHashSet<>());
     }
 
     @Override
diff --git a/api/src/main/java/net/momirealms/customnameplates/api/CNPlayer.java b/api/src/main/java/net/momirealms/customnameplates/api/CNPlayer.java
index 3159b73..2acf661 100644
--- a/api/src/main/java/net/momirealms/customnameplates/api/CNPlayer.java
+++ b/api/src/main/java/net/momirealms/customnameplates/api/CNPlayer.java
@@ -28,6 +28,7 @@ import net.momirealms.customnameplates.api.util.Vector3;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
 
+import java.util.Collection;
 import java.util.List;
 import java.util.Set;
 import java.util.UUID;
@@ -190,7 +191,7 @@ public interface CNPlayer {
      * @param placeholders the placeholders to update
      * @param another      the players related to the placeholders
      */
-    void forceUpdatePlaceholders(Set<Placeholder> placeholders, Set<CNPlayer> another);
+    void forceUpdatePlaceholders(Set<Placeholder> placeholders, Collection<CNPlayer> another);
 
     /**
      * Retrieves the cached data for a given placeholder.
@@ -317,7 +318,7 @@ public interface CNPlayer {
      *
      * @return the set of nearby players
      */
-    Set<CNPlayer> nearbyPlayers();
+    Collection<CNPlayer> nearbyPlayers();
 
     /**
      * Adds passenger entities to the tracker for another player.
diff --git a/api/src/main/java/net/momirealms/customnameplates/api/CustomNameplates.java b/api/src/main/java/net/momirealms/customnameplates/api/CustomNameplates.java
index 9bd5bce..f241640 100644
--- a/api/src/main/java/net/momirealms/customnameplates/api/CustomNameplates.java
+++ b/api/src/main/java/net/momirealms/customnameplates/api/CustomNameplates.java
@@ -17,6 +17,8 @@
 
 package net.momirealms.customnameplates.api;
 
+import it.unimi.dsi.fastutil.ints.Int2ObjectOpenHashMap;
+import it.unimi.dsi.fastutil.objects.ObjectArrayList;
 import net.momirealms.customnameplates.api.feature.actionbar.ActionBarManager;
 import net.momirealms.customnameplates.api.feature.advance.AdvanceManager;
 import net.momirealms.customnameplates.api.feature.background.BackgroundManager;
@@ -38,10 +40,7 @@ import net.momirealms.customnameplates.common.locale.TranslationManager;
 import net.momirealms.customnameplates.common.plugin.NameplatesPlugin;
 import net.momirealms.customnameplates.common.plugin.scheduler.SchedulerTask;
 
-import java.util.Collection;
-import java.util.HashMap;
-import java.util.HashSet;
-import java.util.UUID;
+import java.util.*;
 import java.util.concurrent.ConcurrentHashMap;
 import java.util.function.Consumer;
 import java.util.function.Supplier;
@@ -69,7 +68,7 @@ public abstract class CustomNameplates implements NameplatesPlugin {
     protected MainTask mainTask;
     protected SchedulerTask scheduledMainTask;
     protected ConcurrentHashMap<UUID, CNPlayer> onlinePlayerMap = new ConcurrentHashMap<>();
-    protected HashMap<Integer, CNPlayer> entityIDFastLookup = new HashMap<>();
+    protected Int2ObjectOpenHashMap<CNPlayer> entityIDFastLookup = new Int2ObjectOpenHashMap<>();
     protected AdvanceManager advanceManager;
     protected BackgroundManager backgroundManager;
     protected EventManager eventManager;
@@ -288,7 +287,7 @@ public abstract class CustomNameplates implements NameplatesPlugin {
      * @return a collection of {@link CNPlayer} instances
      */
     public Collection<CNPlayer> getOnlinePlayers() {
-        return new HashSet<>(onlinePlayerMap.values());
+        return new ObjectArrayList<>(onlinePlayerMap.values());
     }
 
     /**
diff --git a/api/src/main/java/net/momirealms/customnameplates/api/MainTask.java b/api/src/main/java/net/momirealms/customnameplates/api/MainTask.java
index 9612792..5183085 100644
--- a/api/src/main/java/net/momirealms/customnameplates/api/MainTask.java
+++ b/api/src/main/java/net/momirealms/customnameplates/api/MainTask.java
@@ -17,6 +17,8 @@
 
 package net.momirealms.customnameplates.api;
 
+import it.unimi.dsi.fastutil.objects.ObjectOpenHashSet;
+
 import java.util.Collections;
 import java.util.HashSet;
 import java.util.Map;
@@ -29,7 +31,7 @@ public class MainTask implements Runnable {
 
     private static final Map<Integer, Integer> TIME_1 = new ConcurrentHashMap<>(2048);
     private static final Map<Integer, Integer> TIME_2 = new ConcurrentHashMap<>(2048);
-    private static final Set<Integer> requestedSharedPlaceholders = Collections.synchronizedSet(new HashSet<>());
+    private static final Set<Integer> requestedSharedPlaceholders = Collections.synchronizedSet(new ObjectOpenHashSet<>());
     private int timer;
 
     private final CustomNameplates plugin;
diff --git a/api/src/main/java/net/momirealms/customnameplates/api/feature/PreParsedDynamicText.java b/api/src/main/java/net/momirealms/customnameplates/api/feature/PreParsedDynamicText.java
index acf34d1..f4c4830 100644
--- a/api/src/main/java/net/momirealms/customnameplates/api/feature/PreParsedDynamicText.java
+++ b/api/src/main/java/net/momirealms/customnameplates/api/feature/PreParsedDynamicText.java
@@ -17,6 +17,8 @@
 
 package net.momirealms.customnameplates.api.feature;
 
+import it.unimi.dsi.fastutil.objects.ObjectArrayList;
+import it.unimi.dsi.fastutil.objects.ObjectOpenHashSet;
 import net.momirealms.customnameplates.api.CNPlayer;
 import net.momirealms.customnameplates.api.CustomNameplates;
 import net.momirealms.customnameplates.api.placeholder.*;
@@ -27,8 +29,8 @@ import java.util.function.Function;
 public class PreParsedDynamicText {
 
     private final String text;
-    private final List<Function<CNPlayer, Function<CNPlayer, String>>> textFunctions = new ArrayList<>();
-    private final Set<Placeholder> set = new HashSet<>();
+    private final List<Function<CNPlayer, Function<CNPlayer, String>>> textFunctions = new ObjectArrayList<>();
+    private final Set<Placeholder> set = new ObjectOpenHashSet<>();
     private boolean init = false;
 
     public PreParsedDynamicText(String text) {
@@ -86,12 +88,12 @@ public class PreParsedDynamicText {
             String remaining = original0.substring(lastIndex);
             textFunctions.add((owner) -> (viewer) -> remaining);
         }
-        // To optimize the tree height, call new HashSet twice here
-        set.addAll(new HashSet<>(placeholders));
+        // To optimize the tree height
+        set.addAll(new ObjectArrayList<>(placeholders));
     }
 
     public DynamicText fastCreate(CNPlayer player) {
-        List<Function<CNPlayer, String>> functions = new ArrayList<>();
+        List<Function<CNPlayer, String>> functions = new ObjectArrayList<>();
         for (Function<CNPlayer, Function<CNPlayer, String>> textFunction : textFunctions) {
             functions.add(textFunction.apply(player));
         }
diff --git a/api/src/main/java/net/momirealms/customnameplates/api/feature/advance/CharacterFontAdvanceDataImpl.java b/api/src/main/java/net/momirealms/customnameplates/api/feature/advance/CharacterFontAdvanceDataImpl.java
index b1b4032..0f84a4a 100644
--- a/api/src/main/java/net/momirealms/customnameplates/api/feature/advance/CharacterFontAdvanceDataImpl.java
+++ b/api/src/main/java/net/momirealms/customnameplates/api/feature/advance/CharacterFontAdvanceDataImpl.java
@@ -18,6 +18,7 @@
 package net.momirealms.customnameplates.api.feature.advance;
 
 import com.google.gson.JsonObject;
+import it.unimi.dsi.fastutil.ints.Int2FloatOpenHashMap;
 
 import java.util.HashMap;
 import java.util.List;
@@ -28,11 +29,11 @@ import static java.util.Objects.requireNonNull;
 
 public class CharacterFontAdvanceDataImpl implements CharacterFontAdvanceData {
 
-    private final HashMap<Integer, Float> data;
+    private final Map<Integer, Float> data;
     private final String id;
     private final Function<Map<String, Object>, List<JsonObject>> fontProviderFunction;
 
-    public CharacterFontAdvanceDataImpl(String id, HashMap<Integer, Float> data, Function<Map<String, Object>, List<JsonObject>> fontProviderFunction) {
+    public CharacterFontAdvanceDataImpl(String id, Map<Integer, Float> data, Function<Map<String, Object>, List<JsonObject>> fontProviderFunction) {
         this.data = data;
         this.id = requireNonNull(id);
         this.fontProviderFunction = requireNonNull(fontProviderFunction);
@@ -65,7 +66,7 @@ public class CharacterFontAdvanceDataImpl implements CharacterFontAdvanceData {
 
     public static class BuilderImpl implements Builder {
 
-        private final HashMap<Integer, Float> data = new HashMap<>();
+        private final Int2FloatOpenHashMap data = new Int2FloatOpenHashMap();
         private String id;
         private Function<Map<String, Object>, List<JsonObject>> fontProviderFunction = (stringObjectMap -> null);
 
diff --git a/api/src/main/java/net/momirealms/customnameplates/api/feature/advance/ConfigurableFontAdvanceDataImpl.java b/api/src/main/java/net/momirealms/customnameplates/api/feature/advance/ConfigurableFontAdvanceDataImpl.java
index d54501d..00c72ff 100644
--- a/api/src/main/java/net/momirealms/customnameplates/api/feature/advance/ConfigurableFontAdvanceDataImpl.java
+++ b/api/src/main/java/net/momirealms/customnameplates/api/feature/advance/ConfigurableFontAdvanceDataImpl.java
@@ -17,18 +17,18 @@
 
 package net.momirealms.customnameplates.api.feature.advance;
 
-import java.util.ArrayList;
-import java.util.Collections;
-import java.util.HashMap;
-import java.util.List;
+import it.unimi.dsi.fastutil.ints.Int2FloatOpenHashMap;
+import it.unimi.dsi.fastutil.objects.ObjectArrayList;
+
+import java.util.*;
 
 import static java.util.Objects.requireNonNull;
 
 public class ConfigurableFontAdvanceDataImpl implements ConfigurableFontAdvanceData {
 
     private final float defaultAdvance;
-    private final HashMap<Integer, Float> data = new HashMap<>();
-    private final List<CharacterFontAdvanceData> parents = new ArrayList<>();
+    private final Map<Integer, Float> data = new Int2FloatOpenHashMap();
+    private final List<CharacterFontAdvanceData> parents = new ObjectArrayList<>();
     private final String id;
 
     public ConfigurableFontAdvanceDataImpl(String id, float defaultAdvance, HashMap<Integer, Float> customData, List<CharacterFontAdvanceData> parentFonts) {
diff --git a/api/src/main/java/net/momirealms/customnameplates/api/feature/tag/TeamView.java b/api/src/main/java/net/momirealms/customnameplates/api/feature/tag/TeamView.java
index 7793107..e7dd590 100644
--- a/api/src/main/java/net/momirealms/customnameplates/api/feature/tag/TeamView.java
+++ b/api/src/main/java/net/momirealms/customnameplates/api/feature/tag/TeamView.java
@@ -17,16 +17,15 @@
 
 package net.momirealms.customnameplates.api.feature.tag;
 
+import it.unimi.dsi.fastutil.objects.Object2ObjectOpenHashMap;
+import it.unimi.dsi.fastutil.objects.ObjectOpenHashSet;
 import org.jetbrains.annotations.Nullable;
 
-import java.util.Collection;
-import java.util.HashMap;
-import java.util.HashSet;
-import java.util.Set;
+import java.util.*;
 
 public class TeamView {
 
-    private final HashMap<String, Set<String>> teamMembers = new HashMap<>();
+    private final Map<String, Set<String>> teamMembers = new Object2ObjectOpenHashMap<>();
 
     @Nullable
     public Set<String> getTeamMembers(String team) {
@@ -34,7 +33,7 @@ public class TeamView {
     }
 
     public void addTeamMembers(String team, Collection<String> members) {
-        teamMembers.computeIfAbsent(team, k -> new HashSet<>(members));
+        teamMembers.computeIfAbsent(team, k -> new ObjectOpenHashSet<>(members));
     }
 
     public void removeTeamMembers(String team, Collection<String> members) {
diff --git a/api/src/main/java/net/momirealms/customnameplates/api/network/Tracker.java b/api/src/main/java/net/momirealms/customnameplates/api/network/Tracker.java
index e1a5775..360fd22 100644
--- a/api/src/main/java/net/momirealms/customnameplates/api/network/Tracker.java
+++ b/api/src/main/java/net/momirealms/customnameplates/api/network/Tracker.java
@@ -17,6 +17,7 @@
 
 package net.momirealms.customnameplates.api.network;
 
+import it.unimi.dsi.fastutil.objects.ObjectOpenHashSet;
 import net.momirealms.customnameplates.api.CNPlayer;
 
 import java.util.HashSet;
@@ -80,7 +81,7 @@ public class Tracker {
     }
 
     public Set<Integer> getPassengerIDs() {
-        return new HashSet<>(passengerIDs);
+        return new ObjectOpenHashSet<>(passengerIDs);
     }
 
     public boolean isEmpty() {
diff --git a/api/src/main/java/net/momirealms/customnameplates/api/placeholder/AbstractPlaceholder.java b/api/src/main/java/net/momirealms/customnameplates/api/placeholder/AbstractPlaceholder.java
index 48ff4da..7a70902 100644
--- a/api/src/main/java/net/momirealms/customnameplates/api/placeholder/AbstractPlaceholder.java
+++ b/api/src/main/java/net/momirealms/customnameplates/api/placeholder/AbstractPlaceholder.java
@@ -17,6 +17,7 @@
 
 package net.momirealms.customnameplates.api.placeholder;
 
+import it.unimi.dsi.fastutil.objects.ObjectOpenHashSet;
 import net.momirealms.customnameplates.api.CustomNameplates;
 
 import java.util.HashSet;
@@ -29,8 +30,8 @@ public abstract class AbstractPlaceholder implements Placeholder {
     protected int countId = PlaceholderCounter.getAndIncrease();
     protected int refreshInterval;
     protected PlaceholderManager manager;
-    protected Set<Placeholder> children = new HashSet<>();
-    protected Set<Placeholder> parents = new HashSet<>();
+    protected Set<Placeholder> children = new ObjectOpenHashSet<>();
+    protected Set<Placeholder> parents = new ObjectOpenHashSet<>();
 
     protected AbstractPlaceholder(PlaceholderManager manager, String id, int refreshInterval) {
         if (refreshInterval == 0) {
diff --git a/api/src/main/java/net/momirealms/customnameplates/api/requirement/EmptyRequirement.java b/api/src/main/java/net/momirealms/customnameplates/api/requirement/EmptyRequirement.java
index cf06b13..b81b479 100644
--- a/api/src/main/java/net/momirealms/customnameplates/api/requirement/EmptyRequirement.java
+++ b/api/src/main/java/net/momirealms/customnameplates/api/requirement/EmptyRequirement.java
@@ -18,6 +18,7 @@
 package net.momirealms.customnameplates.api.requirement;
 
 import net.momirealms.customnameplates.api.CNPlayer;
+import net.momirealms.customnameplates.api.CustomNameplates;
 
 /**
  * A requirement that is always satisfied, representing an "empty" or default requirement.
@@ -57,6 +58,11 @@ public class EmptyRequirement implements Requirement {
         return "empty";
     }
 
+    @Override
+    public int countId() {
+        return CustomNameplates.getInstance().getRequirementManager().countId(this);
+    }
+
     /**
      * Returns -1, indicating that this requirement does not have a refresh interval.
      *
diff --git a/api/src/main/java/net/momirealms/customnameplates/api/requirement/Requirement.java b/api/src/main/java/net/momirealms/customnameplates/api/requirement/Requirement.java
index bc9804d..8487a6c 100644
--- a/api/src/main/java/net/momirealms/customnameplates/api/requirement/Requirement.java
+++ b/api/src/main/java/net/momirealms/customnameplates/api/requirement/Requirement.java
@@ -40,6 +40,13 @@ public interface Requirement {
      */
     String type();
 
+    /**
+     * Returns the int id for faster lookup
+     *
+     * @return count id
+     */
+    int countId();
+
     /**
      * Returns the refresh interval of the requirement.
      *
diff --git a/api/src/main/java/net/momirealms/customnameplates/api/requirement/RequirementManager.java b/api/src/main/java/net/momirealms/customnameplates/api/requirement/RequirementManager.java
index 4dc1344..1863f2d 100644
--- a/api/src/main/java/net/momirealms/customnameplates/api/requirement/RequirementManager.java
+++ b/api/src/main/java/net/momirealms/customnameplates/api/requirement/RequirementManager.java
@@ -87,4 +87,12 @@ public interface RequirementManager extends Reloadable {
      */
     @NotNull
     Requirement parseSimpleRequirement(@NotNull String type, @NotNull Object value);
+
+    /**
+     * Gets the count id for the requirement for faster lookup
+     *
+     * @param requirement requirement
+     * @return the id
+     */
+    int countId(Requirement requirement);
 }
diff --git a/backend/build.gradle.kts b/backend/build.gradle.kts
index 7fa4282..25613a3 100644
--- a/backend/build.gradle.kts
+++ b/backend/build.gradle.kts
@@ -26,4 +26,6 @@ dependencies {
     // TTF
     compileOnly("org.lwjgl:lwjgl-freetype:${rootProject.properties["lwjgl_version"]}")
     compileOnly("org.lwjgl:lwjgl:${rootProject.properties["lwjgl_version"]}")
+    // Fast util
+    compileOnly("it.unimi.dsi:fastutil:${rootProject.properties["fastutil_version"]}")
 }
\ No newline at end of file
diff --git a/backend/src/main/java/net/momirealms/customnameplates/backend/feature/actionbar/ActionBarSender.java b/backend/src/main/java/net/momirealms/customnameplates/backend/feature/actionbar/ActionBarSender.java
index 9ce5fd9..32e617f 100644
--- a/backend/src/main/java/net/momirealms/customnameplates/backend/feature/actionbar/ActionBarSender.java
+++ b/backend/src/main/java/net/momirealms/customnameplates/backend/feature/actionbar/ActionBarSender.java
@@ -17,6 +17,7 @@
 
 package net.momirealms.customnameplates.backend.feature.actionbar;
 
+import it.unimi.dsi.fastutil.objects.ObjectOpenHashSet;
 import net.momirealms.customnameplates.api.CNPlayer;
 import net.momirealms.customnameplates.api.ConfigManager;
 import net.momirealms.customnameplates.api.CustomNameplates;
@@ -177,7 +178,7 @@ public class ActionBarSender implements Feature {
 
     @Override
     public Set<Placeholder> allPlaceholders() {
-        HashSet<Placeholder> placeholders = new HashSet<>();
+        Set<Placeholder> placeholders = new ObjectOpenHashSet<>();
         for (ActionBarConfig config : manager.actionBarConfigs()) {
             for (CarouselText text : config.carouselTexts()) {
                 placeholders.addAll(text.preParsedDynamicText().placeholders());
diff --git a/backend/src/main/java/net/momirealms/customnameplates/backend/feature/advance/AdvanceManagerImpl.java b/backend/src/main/java/net/momirealms/customnameplates/backend/feature/advance/AdvanceManagerImpl.java
index a6e614a..5b6e541 100644
--- a/backend/src/main/java/net/momirealms/customnameplates/backend/feature/advance/AdvanceManagerImpl.java
+++ b/backend/src/main/java/net/momirealms/customnameplates/backend/feature/advance/AdvanceManagerImpl.java
@@ -25,6 +25,8 @@ import com.google.gson.JsonObject;
 import com.google.gson.JsonParser;
 import dev.dejvokep.boostedyaml.YamlDocument;
 import dev.dejvokep.boostedyaml.block.implementation.Section;
+import it.unimi.dsi.fastutil.objects.Object2ObjectOpenHashMap;
+import it.unimi.dsi.fastutil.objects.ObjectArrayList;
 import net.kyori.adventure.key.Key;
 import net.kyori.adventure.text.Component;
 import net.kyori.adventure.text.TextComponent;
@@ -292,8 +294,8 @@ public class AdvanceManagerImpl implements AdvanceManager {
     private final HashMap<String, BiConsumer<String, Section>> templateConfigConsumersMap = new HashMap<>();
 
     private final CustomNameplates plugin;
-    private final HashMap<String, CharacterFontAdvanceData> charFontWidthDataMap = new HashMap<>();
-    private final HashMap<String, ConfigurableFontAdvanceData> configFontWidthDataMap = new HashMap<>();
+    private final Object2ObjectOpenHashMap<String, CharacterFontAdvanceData> charFontWidthDataMap = new Object2ObjectOpenHashMap<>();
+    private final Object2ObjectOpenHashMap<String, ConfigurableFontAdvanceData> configFontWidthDataMap = new Object2ObjectOpenHashMap<>();
 
     private final Cache<String, Float> textWidthCache;
 
@@ -1220,7 +1222,7 @@ public class AdvanceManagerImpl implements AdvanceManager {
     public List<Tuple<String, Key, Boolean>> miniMessageToIterable(String text) {
         if (AdventureHelper.legacySupport) text = AdventureHelper.legacyToMiniMessage(text);
         ElementNode node = (ElementNode) AdventureHelper.miniMessage().deserializeToTree(text);
-        ArrayList<Tuple<String, Key, Boolean>> iterableTexts = new ArrayList<>();
+        List<Tuple<String, Key, Boolean>> iterableTexts = new ObjectArrayList<>();
         nodeToIterableTexts(node, iterableTexts, MINECRAFT_DEFAULT_FONT, false);
         return iterableTexts;
     }
diff --git a/backend/src/main/java/net/momirealms/customnameplates/backend/feature/background/BackgroundManagerImpl.java b/backend/src/main/java/net/momirealms/customnameplates/backend/feature/background/BackgroundManagerImpl.java
index 89896b3..7e27ec3 100644
--- a/backend/src/main/java/net/momirealms/customnameplates/backend/feature/background/BackgroundManagerImpl.java
+++ b/backend/src/main/java/net/momirealms/customnameplates/backend/feature/background/BackgroundManagerImpl.java
@@ -18,6 +18,7 @@
 package net.momirealms.customnameplates.backend.feature.background;
 
 import dev.dejvokep.boostedyaml.YamlDocument;
+import it.unimi.dsi.fastutil.objects.ObjectArrayList;
 import net.momirealms.customnameplates.api.ConfigManager;
 import net.momirealms.customnameplates.api.CustomNameplates;
 import net.momirealms.customnameplates.api.feature.ConfiguredCharacter;
@@ -57,7 +58,7 @@ public class BackgroundManagerImpl implements BackgroundManager {
 
     @Override
     public Collection<Background> getBackgrounds() {
-        return new HashSet<>(backgrounds.values());
+        return new ObjectArrayList<>(backgrounds.values());
     }
 
     private void loadConfigs() {
diff --git a/backend/src/main/java/net/momirealms/customnameplates/backend/feature/bossbar/BossBarSender.java b/backend/src/main/java/net/momirealms/customnameplates/backend/feature/bossbar/BossBarSender.java
index 51b82f6..26e33d7 100644
--- a/backend/src/main/java/net/momirealms/customnameplates/backend/feature/bossbar/BossBarSender.java
+++ b/backend/src/main/java/net/momirealms/customnameplates/backend/feature/bossbar/BossBarSender.java
@@ -17,6 +17,7 @@
 
 package net.momirealms.customnameplates.backend.feature.bossbar;
 
+import it.unimi.dsi.fastutil.objects.ObjectOpenHashSet;
 import net.momirealms.customnameplates.api.CNPlayer;
 import net.momirealms.customnameplates.api.CustomNameplates;
 import net.momirealms.customnameplates.api.feature.CarouselText;
@@ -163,7 +164,7 @@ public class BossBarSender implements Feature, BossBar {
 
     @Override
     public Set<Placeholder> allPlaceholders() {
-        HashSet<Placeholder> placeholders = new HashSet<>();
+        Set<Placeholder> placeholders = new ObjectOpenHashSet<>();
         for (CarouselText text : config.carouselTexts()) {
             placeholders.addAll(text.preParsedDynamicText().placeholders());
         }
diff --git a/backend/src/main/java/net/momirealms/customnameplates/backend/feature/bubble/BubbleManagerImpl.java b/backend/src/main/java/net/momirealms/customnameplates/backend/feature/bubble/BubbleManagerImpl.java
index 090de46..0e4364a 100644
--- a/backend/src/main/java/net/momirealms/customnameplates/backend/feature/bubble/BubbleManagerImpl.java
+++ b/backend/src/main/java/net/momirealms/customnameplates/backend/feature/bubble/BubbleManagerImpl.java
@@ -27,6 +27,8 @@ import dev.dejvokep.boostedyaml.settings.general.GeneralSettings;
 import dev.dejvokep.boostedyaml.settings.loader.LoaderSettings;
 import dev.dejvokep.boostedyaml.settings.updater.UpdaterSettings;
 import dev.dejvokep.boostedyaml.utils.format.NodeRole;
+import it.unimi.dsi.fastutil.objects.Object2ObjectOpenHashMap;
+import it.unimi.dsi.fastutil.objects.ObjectArrayList;
 import net.momirealms.customnameplates.api.CNPlayer;
 import net.momirealms.customnameplates.api.ConfigManager;
 import net.momirealms.customnameplates.api.CustomNameplates;
@@ -51,7 +53,7 @@ import java.util.concurrent.TimeUnit;
 public class BubbleManagerImpl implements BubbleManager, ChatListener {
 
     private final CustomNameplates plugin;
-    private final Map<String, Bubble> bubbles = new HashMap<>();
+    private final Map<String, Bubble> bubbles = new Object2ObjectOpenHashMap<>();
     private Requirement[] sendBubbleRequirements;
     private Requirement[] viewBubbleRequirements;
     private String defaultBubbleId;
@@ -62,7 +64,7 @@ public class BubbleManagerImpl implements BubbleManager, ChatListener {
     private float viewRange;
     private Set<String> blacklistChannels;
     private ChannelMode channelMode;
-    private final HashMap<String, BubbleConfig> bubbleConfigs = new HashMap<>();
+    private final Map<String, BubbleConfig> bubbleConfigs = new Object2ObjectOpenHashMap<>();
 
     public BubbleManagerImpl(CustomNameplates plugin) {
         this.plugin = plugin;
@@ -94,12 +96,12 @@ public class BubbleManagerImpl implements BubbleManager, ChatListener {
 
     @Override
     public Collection<Bubble> bubbles() {
-        return new HashSet<>(bubbles.values());
+        return new ObjectArrayList<>(bubbles.values());
     }
 
     @Override
     public Collection<BubbleConfig> bubbleConfigs() {
-        return new HashSet<>(bubbleConfigs.values());
+        return new ObjectArrayList<>(bubbleConfigs.values());
     }
 
     @Override
diff --git a/backend/src/main/java/net/momirealms/customnameplates/backend/feature/image/ImageManagerImpl.java b/backend/src/main/java/net/momirealms/customnameplates/backend/feature/image/ImageManagerImpl.java
index 470068b..2eb83e8 100644
--- a/backend/src/main/java/net/momirealms/customnameplates/backend/feature/image/ImageManagerImpl.java
+++ b/backend/src/main/java/net/momirealms/customnameplates/backend/feature/image/ImageManagerImpl.java
@@ -18,6 +18,7 @@
 package net.momirealms.customnameplates.backend.feature.image;
 
 import dev.dejvokep.boostedyaml.YamlDocument;
+import it.unimi.dsi.fastutil.objects.ObjectArrayList;
 import net.momirealms.customnameplates.api.ConfigManager;
 import net.momirealms.customnameplates.api.CustomNameplates;
 import net.momirealms.customnameplates.api.feature.ConfiguredCharacter;
@@ -60,7 +61,7 @@ public class ImageManagerImpl implements ImageManager {
 
     @Override
     public Collection<Image> images() {
-        return new HashSet<>(images.values());
+        return new ObjectArrayList<>(images.values());
     }
 
     private void loadConfigs() {
diff --git a/backend/src/main/java/net/momirealms/customnameplates/backend/feature/nameplate/NameplateManagerImpl.java b/backend/src/main/java/net/momirealms/customnameplates/backend/feature/nameplate/NameplateManagerImpl.java
index 082489d..392532f 100644
--- a/backend/src/main/java/net/momirealms/customnameplates/backend/feature/nameplate/NameplateManagerImpl.java
+++ b/backend/src/main/java/net/momirealms/customnameplates/backend/feature/nameplate/NameplateManagerImpl.java
@@ -18,6 +18,7 @@
 package net.momirealms.customnameplates.backend.feature.nameplate;
 
 import dev.dejvokep.boostedyaml.YamlDocument;
+import it.unimi.dsi.fastutil.objects.ObjectArrayList;
 import net.momirealms.customnameplates.api.CNPlayer;
 import net.momirealms.customnameplates.api.ConfigManager;
 import net.momirealms.customnameplates.api.CustomNameplates;
@@ -61,7 +62,7 @@ public class NameplateManagerImpl implements NameplateManager {
 
     @Override
     public Collection<Nameplate> nameplates() {
-        return new HashSet<>(nameplates.values());
+        return new ObjectArrayList<>(nameplates.values());
     }
 
     @Override
diff --git a/backend/src/main/java/net/momirealms/customnameplates/backend/feature/tag/NameTag.java b/backend/src/main/java/net/momirealms/customnameplates/backend/feature/tag/NameTag.java
index e664e70..991a0b1 100644
--- a/backend/src/main/java/net/momirealms/customnameplates/backend/feature/tag/NameTag.java
+++ b/backend/src/main/java/net/momirealms/customnameplates/backend/feature/tag/NameTag.java
@@ -17,6 +17,7 @@
 
 package net.momirealms.customnameplates.backend.feature.tag;
 
+import it.unimi.dsi.fastutil.objects.ObjectOpenHashSet;
 import net.momirealms.customnameplates.api.CNPlayer;
 import net.momirealms.customnameplates.api.CustomNameplates;
 import net.momirealms.customnameplates.api.feature.CarouselText;
@@ -195,7 +196,7 @@ public class NameTag extends AbstractTag implements RelationalFeature {
 
     @Override
     public Set<Placeholder> allPlaceholders() {
-        HashSet<Placeholder> placeholders = new HashSet<>();
+        Set<Placeholder> placeholders = new ObjectOpenHashSet<>();
         for (CarouselText text : config.carouselTexts()) {
             placeholders.addAll(text.preParsedDynamicText().placeholders());
         }
diff --git a/backend/src/main/java/net/momirealms/customnameplates/backend/feature/tag/TagRendererImpl.java b/backend/src/main/java/net/momirealms/customnameplates/backend/feature/tag/TagRendererImpl.java
index 5a07c6f..8df2892 100644
--- a/backend/src/main/java/net/momirealms/customnameplates/backend/feature/tag/TagRendererImpl.java
+++ b/backend/src/main/java/net/momirealms/customnameplates/backend/feature/tag/TagRendererImpl.java
@@ -17,6 +17,7 @@
 
 package net.momirealms.customnameplates.backend.feature.tag;
 
+import it.unimi.dsi.fastutil.objects.ObjectOpenHashSet;
 import net.momirealms.customnameplates.api.CNPlayer;
 import net.momirealms.customnameplates.api.CustomNameplates;
 import net.momirealms.customnameplates.api.feature.Feature;
@@ -69,14 +70,15 @@ public class TagRendererImpl implements TagRenderer {
 
     @Override
     public void onTick() {
-        HashSet<CNPlayer> playersToUpdatePassengers = new HashSet<>();
-        HashSet<CNPlayer> tagTranslationUpdates = new HashSet<>();
+        Set<CNPlayer> playersToUpdatePassengers = new ObjectOpenHashSet<>();
+        Set<CNPlayer> tagTranslationUpdates = new ObjectOpenHashSet<>();
 
+        Collection<CNPlayer> nearbyPlayers = owner.nearbyPlayers();
         for (Tag tag : tagArray) {
             boolean canShow = tag.canShow();
             if (canShow) {
                 if (tag.isShown()) {
-                    for (CNPlayer nearby : owner.nearbyPlayers()) {
+                    for (CNPlayer nearby : nearbyPlayers) {
                         if (tag.isShown(nearby)) {
                             if (!tag.canShow(nearby)) {
                                 tag.hide(nearby);
@@ -97,7 +99,7 @@ public class TagRendererImpl implements TagRenderer {
                     tag.init();
                     tag.tick();
                     tag.show();
-                    for (CNPlayer nearby : owner.nearbyPlayers()) {
+                    for (CNPlayer nearby : nearbyPlayers) {
                         if (tag.canShow(nearby) && !tag.isShown(nearby)) {
                             tag.show(nearby);
                             playersToUpdatePassengers.add(nearby);
@@ -110,7 +112,7 @@ public class TagRendererImpl implements TagRenderer {
                 if (tag.isShown()) {
                     tag.hide();
                     if (!tag.relativeTranslation())
-                        tagTranslationUpdates.addAll(owner.nearbyPlayers());
+                        tagTranslationUpdates.addAll(nearbyPlayers);
                 }
             }
         }
diff --git a/backend/src/main/java/net/momirealms/customnameplates/backend/placeholder/PlaceholderManagerImpl.java b/backend/src/main/java/net/momirealms/customnameplates/backend/placeholder/PlaceholderManagerImpl.java
index 8e3af59..274fe51 100644
--- a/backend/src/main/java/net/momirealms/customnameplates/backend/placeholder/PlaceholderManagerImpl.java
+++ b/backend/src/main/java/net/momirealms/customnameplates/backend/placeholder/PlaceholderManagerImpl.java
@@ -19,6 +19,10 @@ package net.momirealms.customnameplates.backend.placeholder;
 
 import dev.dejvokep.boostedyaml.YamlDocument;
 import dev.dejvokep.boostedyaml.block.implementation.Section;
+import it.unimi.dsi.fastutil.ints.Int2IntOpenHashMap;
+import it.unimi.dsi.fastutil.objects.Object2ObjectOpenHashMap;
+import it.unimi.dsi.fastutil.objects.ObjectArrayList;
+import it.unimi.dsi.fastutil.objects.ObjectOpenHashSet;
 import net.momirealms.customnameplates.api.CNPlayer;
 import net.momirealms.customnameplates.api.ConfigManager;
 import net.momirealms.customnameplates.api.CustomNameplates;
@@ -51,7 +55,7 @@ public class PlaceholderManagerImpl implements PlaceholderManager {
 
     private final CustomNameplates plugin;
     private final HashMap<String, Integer> refreshIntervals = new HashMap<>();
-    private final HashMap<Integer, Integer> fasterRefreshIntervals = new HashMap<>();
+    private final Int2IntOpenHashMap fasterRefreshIntervals = new Int2IntOpenHashMap();
     private final Map<String, Placeholder> registeredPlaceholders = new HashMap<>();
     private final HashMap<Placeholder, List<PreParsedDynamicText>> childrenText = new HashMap<>();
     private final HashMap<String, Placeholder> nestedPlaceholders = new HashMap<>();
@@ -575,9 +579,9 @@ public class PlaceholderManagerImpl implements PlaceholderManager {
     public void refreshPlaceholders() {
         for (CNPlayer player : plugin.getOnlinePlayers()) {
             if (!player.isOnline()) continue;
-            Set<Feature> featuresToNotifyUpdates = new HashSet<>();
-            Map<Feature, List<CNPlayer>> relationalFeaturesToNotifyUpdates = new HashMap<>();
-            List<RelationalPlaceholder> delayedPlaceholdersToUpdate = new ArrayList<>();
+            Set<Feature> featuresToNotifyUpdates = new ObjectOpenHashSet<>();
+            Map<Feature, List<CNPlayer>> relationalFeaturesToNotifyUpdates = new Object2ObjectOpenHashMap<>();
+            List<RelationalPlaceholder> delayedPlaceholdersToUpdate = new ObjectArrayList<>();
             for (Placeholder placeholder : player.activePlaceholdersToRefresh()) {
                 if (placeholder instanceof PlayerPlaceholder playerPlaceholder) {
                     TimeStampData<String> previous = player.getValue(placeholder);
@@ -652,7 +656,7 @@ public class PlaceholderManagerImpl implements PlaceholderManager {
                         for (Feature feature : player.activeFeatures(placeholder)) {
                             // Filter features that will not be updated for all players
                             if (!featuresToNotifyUpdates.contains(feature)) {
-                                List<CNPlayer> players = relationalFeaturesToNotifyUpdates.computeIfAbsent(feature, k -> new ArrayList<>());
+                                List<CNPlayer> players = relationalFeaturesToNotifyUpdates.computeIfAbsent(feature, k -> new ObjectArrayList<>());
                                 players.add(nearby);
                             }
                         }
@@ -663,7 +667,7 @@ public class PlaceholderManagerImpl implements PlaceholderManager {
                                 for (Feature feature : player.activeFeatures(placeholder)) {
                                     // Filter features that will not be updated for all players
                                     if (!featuresToNotifyUpdates.contains(feature)) {
-                                        List<CNPlayer> players = relationalFeaturesToNotifyUpdates.computeIfAbsent(feature, k -> new ArrayList<>());
+                                        List<CNPlayer> players = relationalFeaturesToNotifyUpdates.computeIfAbsent(feature, k -> new ObjectArrayList<>());
                                         players.add(nearby);
                                     }
                                 }
@@ -677,7 +681,7 @@ public class PlaceholderManagerImpl implements PlaceholderManager {
                             for (Feature feature : player.activeFeatures(placeholder)) {
                                 // Filter features that will not be updated for all players
                                 if (!featuresToNotifyUpdates.contains(feature)) {
-                                    List<CNPlayer> players = relationalFeaturesToNotifyUpdates.computeIfAbsent(feature, k -> new ArrayList<>());
+                                    List<CNPlayer> players = relationalFeaturesToNotifyUpdates.computeIfAbsent(feature, k -> new ObjectArrayList<>());
                                     players.add(nearby);
                                 }
                             }
@@ -773,7 +777,7 @@ public class PlaceholderManagerImpl implements PlaceholderManager {
         if (firstPercent == 0 && text.charAt(text.length() - 1) == '%' && text.indexOf('%', 1) == text.length() - 1) {
             return Collections.singletonList(text);
         }
-        List<String> placeholders = new ArrayList<>();
+        List<String> placeholders = new ObjectArrayList<>();
         Matcher m = PATTERN.matcher(text);
         while (m.find()) {
             placeholders.add(m.group());
diff --git a/backend/src/main/java/net/momirealms/customnameplates/backend/requirement/AbstractRequirement.java b/backend/src/main/java/net/momirealms/customnameplates/backend/requirement/AbstractRequirement.java
index 2966113..62e4f9b 100644
--- a/backend/src/main/java/net/momirealms/customnameplates/backend/requirement/AbstractRequirement.java
+++ b/backend/src/main/java/net/momirealms/customnameplates/backend/requirement/AbstractRequirement.java
@@ -17,16 +17,29 @@
 
 package net.momirealms.customnameplates.backend.requirement;
 
+import net.momirealms.customnameplates.api.CustomNameplates;
 import net.momirealms.customnameplates.api.requirement.Requirement;
+import org.jetbrains.annotations.Nullable;
 
 public abstract class AbstractRequirement implements Requirement {
 
     protected final int refreshInterval;
+    @Nullable
+    protected Integer countId;
 
     public AbstractRequirement(int refreshInterval) {
         this.refreshInterval = refreshInterval;
     }
 
+    @Override
+    public int countId() {
+        // lazy init
+        if (countId == null) {
+            countId = CustomNameplates.getInstance().getRequirementManager().countId(this);
+        }
+        return countId;
+    }
+
     @Override
     public int refreshInterval() {
         return refreshInterval;
diff --git a/backend/src/main/java/net/momirealms/customnameplates/backend/requirement/AbstractRequirementManager.java b/backend/src/main/java/net/momirealms/customnameplates/backend/requirement/AbstractRequirementManager.java
index 04e5a83..e300a31 100644
--- a/backend/src/main/java/net/momirealms/customnameplates/backend/requirement/AbstractRequirementManager.java
+++ b/backend/src/main/java/net/momirealms/customnameplates/backend/requirement/AbstractRequirementManager.java
@@ -18,6 +18,8 @@
 package net.momirealms.customnameplates.backend.requirement;
 
 import dev.dejvokep.boostedyaml.block.implementation.Section;
+import it.unimi.dsi.fastutil.objects.Object2IntOpenHashMap;
+import it.unimi.dsi.fastutil.objects.Object2ObjectOpenHashMap;
 import net.momirealms.customnameplates.api.ConfigManager;
 import net.momirealms.customnameplates.api.CustomNameplates;
 import net.momirealms.customnameplates.api.feature.PreParsedDynamicText;
@@ -35,7 +37,9 @@ import java.util.*;
 public abstract class AbstractRequirementManager implements RequirementManager {
 
     protected final CustomNameplates plugin;
-    private final HashMap<String, RequirementFactory> requirementFactoryMap = new HashMap<>();
+    private final Object2ObjectOpenHashMap<String, RequirementFactory> requirementFactoryMap = new Object2ObjectOpenHashMap<>(128);
+    private int countId = 0;
+    private final Map<Requirement, Integer> registeredRequirements = new Object2IntOpenHashMap<>(128);
 
     public AbstractRequirementManager(CustomNameplates plugin) {
         this.plugin = plugin;
@@ -43,6 +47,21 @@ public abstract class AbstractRequirementManager implements RequirementManager {
         this.registerPlatformRequirements();
     }
 
+    @Override
+    public void reload() {
+        this.countId = 0;
+        this.registeredRequirements.clear();
+    }
+
+    @Override
+    public int countId(Requirement requirement) {
+        if (requirement == null) return -1;
+        if (this.registeredRequirements.containsKey(requirement)) return this.registeredRequirements.get(requirement);
+        this.countId++;
+        this.registeredRequirements.put(requirement, countId);
+        return this.countId;
+    }
+
     private void registerInternalRequirements() {
         this.registerRequirement((args, interval) -> {
             Section section = ConfigUtils.safeCast(args, Section.class);
diff --git a/backend/src/main/java/net/momirealms/customnameplates/backend/requirement/builtin/PlaceholdersRequirement.java b/backend/src/main/java/net/momirealms/customnameplates/backend/requirement/builtin/PlaceholdersRequirement.java
index 37856d8..7ff7805 100644
--- a/backend/src/main/java/net/momirealms/customnameplates/backend/requirement/builtin/PlaceholdersRequirement.java
+++ b/backend/src/main/java/net/momirealms/customnameplates/backend/requirement/builtin/PlaceholdersRequirement.java
@@ -37,8 +37,9 @@ public abstract class PlaceholdersRequirement extends AbstractRequirement {
 
     @Override
     public boolean isSatisfied(CNPlayer p1, CNPlayer p2) {
-        p1.forceUpdatePlaceholders(t1.placeholders(), Set.of(p2));
-        p1.forceUpdatePlaceholders(t2.placeholders(), Set.of(p2));
+        Set<CNPlayer> set = Set.of(p2);
+        p1.forceUpdatePlaceholders(t1.placeholders(), set);
+        p1.forceUpdatePlaceholders(t2.placeholders(), set);
         String a1 = t1.fastCreate(p1).render(p2);
         String a2 = t2.fastCreate(p1).render(p2);
         return checkArgument(a1, a2);
diff --git a/bukkit/src/main/java/net/momirealms/customnameplates/bukkit/BukkitCustomNameplates.java b/bukkit/src/main/java/net/momirealms/customnameplates/bukkit/BukkitCustomNameplates.java
index d8c4476..d6cbefb 100644
--- a/bukkit/src/main/java/net/momirealms/customnameplates/bukkit/BukkitCustomNameplates.java
+++ b/bukkit/src/main/java/net/momirealms/customnameplates/bukkit/BukkitCustomNameplates.java
@@ -309,6 +309,8 @@ public class BukkitCustomNameplates extends CustomNameplates implements Listener
         for (CNPlayer player : getOnlinePlayers()) {
             ((AbstractCNPlayer) player).reload();
         }
+        // clear requirement ids
+        this.requirementManager.reload();
         // load basics
         this.configManager.reload();
         this.storageManager.reload();
@@ -321,8 +323,6 @@ public class BukkitCustomNameplates extends CustomNameplates implements Listener
         this.advanceManager.reload();
         // set up placeholders
         this.placeholderManager.reload();
-        // set up requirements
-        this.requirementManager.reload();
         // use the placeholders
         this.actionBarManager.reload();
         this.bossBarManager.reload();
diff --git a/compatibility/src/main/java/net/momirealms/customnameplates/bukkit/compatibility/region/RegionRequirement.java b/compatibility/src/main/java/net/momirealms/customnameplates/bukkit/compatibility/region/RegionRequirement.java
index f4acd49..0ebf34e 100644
--- a/compatibility/src/main/java/net/momirealms/customnameplates/bukkit/compatibility/region/RegionRequirement.java
+++ b/compatibility/src/main/java/net/momirealms/customnameplates/bukkit/compatibility/region/RegionRequirement.java
@@ -17,6 +17,7 @@
 
 package net.momirealms.customnameplates.bukkit.compatibility.region;
 
+import com.google.common.base.Objects;
 import com.sk89q.worldedit.bukkit.BukkitAdapter;
 import com.sk89q.worldedit.math.BlockVector3;
 import com.sk89q.worldguard.WorldGuard;
@@ -76,4 +77,16 @@ public class RegionRequirement extends AbstractRequirement {
     public String type() {
         return "region";
     }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) return true;
+        if (!(o instanceof RegionRequirement that)) return false;
+        return mode == that.mode && Objects.equal(regions, that.regions);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hashCode(regions, mode);
+    }
 }
diff --git a/gradle.properties b/gradle.properties
index 4bce444..2635c71 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -1,6 +1,6 @@
 # Project settings
 # Rule: [major update].[feature update].[bug fix]
-project_version=3.0.9
+project_version=3.0.10
 config_version=32
 project_group=net.momirealms
 
@@ -44,6 +44,7 @@ vault_version=1.7
 guava_version=33.3.1-jre
 commons_io_version=2.17.0
 lwjgl_version=3.3.4
+fastutil_version=8.5.15
 
 # Proxy settings
 #systemProp.socks.proxyHost=127.0.0.1