Added display-without-meta option

eco-api/src/main/java/com/willfp/eco/core/display/Display.java

@@ -1,5 +1,6 @@
 package com.willfp.eco.core.display;
 
+import com.willfp.eco.core.Eco;
 import com.willfp.eco.core.fast.FastItemStack;
 import com.willfp.eco.core.integrations.guidetection.GUIDetectionManager;
 import com.willfp.eco.util.NamespacedKeyUtils;
@@ -68,8 +69,10 @@ public final class Display {
 
         Display.revert(itemStack);
 
-        if (!itemStack.hasItemMeta()) {
-            return itemStack;
+        if (!Eco.get().getEcoPlugin().getConfigYml().getBool("display-without-meta")) {
+            if (!itemStack.hasItemMeta()) {
+                return itemStack;
+            }
         }
 
         ItemStack original = itemStack.clone();

eco-core/core-plugin/src/main/resources/config.yml

@@ -97,3 +97,8 @@ math-cache-ttl: 200
 # counts. This is completely anonymous and no personal information is logged. This data
 # is primarily used for optimisation and server insights.
 playerflow: true
+
+# If the packet display system should activate on items that have no meta. This is disabled
+# by default for performance reasons, but if you want to use the packet display system on
+# items that have no meta, then you can enable this option.
+display-without-meta: false