Fix thread priority

src/main/java/io/akarin/server/core/AkarinAsyncScheduler.java

@@ -31,6 +31,7 @@ public class AkarinAsyncScheduler extends Thread {
             instance = new AkarinAsyncScheduler();
             instance.setName("Akarin Async Scheduler Thread");
             instance.setDaemon(true);
+            instance.setPriority(MIN_PRIORITY);
             instance.start();
             LOGGER.info("Async executor started");
         }

src/main/java/net/minecraft/server/MinecraftServer.java

@@ -795,6 +795,7 @@ public abstract class MinecraftServer implements IAsyncTaskHandler, IMojangStati
                 // Spigot start
                 org.spigotmc.WatchdogThread.hasStarted = true; // Paper
                 io.akarin.server.core.AkarinAsyncScheduler.initalise(); // Akarin
+                Thread.currentThread().setPriority(Thread.MAX_PRIORITY); // Akarin
                 Arrays.fill( recentTps, 20 );
                 long start = System.nanoTime(), curTime, wait, tickSection = start; // Paper - Further improve server tick loop
                 lastTick = start - TICK_TIME; // Paper