diff --git a/patches/server/Add-GameEvent-tags.patch b/patches/server/Add-GameEvent-tags.patch
index 25fa3c80eb..ed828ce0f4 100644
--- a/patches/server/Add-GameEvent-tags.patch
+++ b/patches/server/Add-GameEvent-tags.patch
@@ -20,6 +20,9 @@ index 0000000000000000000000000000000000000000..00000000000000000000000000000000
 +import org.bukkit.craftbukkit.util.CraftNamespacedKey;
 +import org.jetbrains.annotations.NotNull;
 +
++import java.util.Collections;
++import java.util.IdentityHashMap;
++import java.util.Map;
 +import java.util.Objects;
 +import java.util.Set;
 +import java.util.stream.Collectors;
@@ -30,9 +33,10 @@ index 0000000000000000000000000000000000000000..00000000000000000000000000000000
 +        super(registry, tag);
 +    }
 +
++    private static final Map<GameEvent, ResourceKey<net.minecraft.world.level.gameevent.GameEvent>> KEY_CACHE = Collections.synchronizedMap(new IdentityHashMap<>());
 +    @Override
-+    public boolean isTagged(@NotNull GameEvent item) {
-+        return registry.getHolderOrThrow(ResourceKey.create(Registry.GAME_EVENT_REGISTRY, CraftNamespacedKey.toMinecraft(item.getKey()))).is(tag);
++    public boolean isTagged(@NotNull GameEvent gameEvent) {
++        return registry.getHolderOrThrow(KEY_CACHE.computeIfAbsent(gameEvent, event -> ResourceKey.create(Registry.GAME_EVENT_REGISTRY, CraftNamespacedKey.toMinecraft(event.getKey())))).is(tag);
 +    }
 +
 +    @Override
diff --git a/patches/server/Add-PaperRegistry.patch b/patches/server/Add-PaperRegistry.patch
index 553f47c4a5..def6301a52 100644
--- a/patches/server/Add-PaperRegistry.patch
+++ b/patches/server/Add-PaperRegistry.patch
@@ -34,6 +34,7 @@ index 0000000000000000000000000000000000000000..00000000000000000000000000000000
 +import java.util.Map;
 +import java.util.Objects;
 +import java.util.Optional;
++import java.util.concurrent.ConcurrentHashMap;
 +import java.util.function.Supplier;
 +
 +@DefaultQualifier(NonNull.class)
@@ -49,7 +50,8 @@ index 0000000000000000000000000000000000000000..00000000000000000000000000000000
 +    private boolean registered;
 +    private final RegistryKey<API, MINECRAFT> registryKey;
 +    private final Supplier<Registry<MINECRAFT>> registry;
-+    private final Map<NamespacedKey, API> cache = new HashMap<>();
++    private final Map<NamespacedKey, API> cache = new ConcurrentHashMap<>();
++    private final Map<NamespacedKey, ResourceKey<MINECRAFT>> resourceKeyCache = new ConcurrentHashMap<>();
 +
 +    public PaperRegistry(RegistryKey<API, MINECRAFT> registryKey) {
 +        this.registryKey = registryKey;
@@ -93,7 +95,7 @@ index 0000000000000000000000000000000000000000..00000000000000000000000000000000
 +    }
 +
 +    public Holder<MINECRAFT> getMinecraftHolder(API apiValue) {
-+        return this.registry.get().getHolderOrThrow(ResourceKey.create(this.registryKey.resourceKey(), CraftNamespacedKey.toMinecraft(apiValue.getKey())));
++        return this.registry.get().getHolderOrThrow(this.resourceKeyCache.computeIfAbsent(apiValue.getKey(), key -> ResourceKey.create(this.registryKey.resourceKey(), CraftNamespacedKey.toMinecraft(key))));
 +    }
 +
 +    @Override
diff --git a/patches/server/cache-resource-keys.patch b/patches/server/cache-resource-keys.patch
new file mode 100644
index 0000000000..4fc3eab26c
--- /dev/null
+++ b/patches/server/cache-resource-keys.patch
@@ -0,0 +1,57 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Jake Potrebic <jake.m.potrebic@gmail.com>
+Date: Sun, 20 Mar 2022 22:06:47 -0700
+Subject: [PATCH] cache resource keys
+
+
+diff --git a/src/main/java/org/bukkit/craftbukkit/block/CraftBlock.java b/src/main/java/org/bukkit/craftbukkit/block/CraftBlock.java
+index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000 100644
+--- a/src/main/java/org/bukkit/craftbukkit/block/CraftBlock.java
++++ b/src/main/java/org/bukkit/craftbukkit/block/CraftBlock.java
+@@ -0,0 +0,0 @@ public class CraftBlock implements Block {
+         return (biome == null) ? Biome.CUSTOM : biome;
+     }
+ 
++    private static final java.util.Map<org.bukkit.block.Biome, net.minecraft.resources.ResourceKey<net.minecraft.world.level.biome.Biome>> BIOME_KEY_CACHE = Collections.synchronizedMap(new java.util.EnumMap<>(Biome.class)); // Paper
+     public static Holder<net.minecraft.world.level.biome.Biome> biomeToBiomeBase(net.minecraft.core.Registry<net.minecraft.world.level.biome.Biome> registry, Biome bio) {
+         if (bio == null || bio == Biome.CUSTOM) {
+             return null;
+         }
+ 
+-        return registry.getHolderOrThrow(ResourceKey.create(net.minecraft.core.Registry.BIOME_REGISTRY, CraftNamespacedKey.toMinecraft(bio.getKey())));
++        return registry.getHolderOrThrow(BIOME_KEY_CACHE.computeIfAbsent(bio, b -> ResourceKey.create(net.minecraft.core.Registry.BIOME_REGISTRY, CraftNamespacedKey.toMinecraft(b.getKey())))); // Paper - cache key
+     }
+ 
+     @Override
+diff --git a/src/main/java/org/bukkit/craftbukkit/tag/CraftEntityTag.java b/src/main/java/org/bukkit/craftbukkit/tag/CraftEntityTag.java
+index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000 100644
+--- a/src/main/java/org/bukkit/craftbukkit/tag/CraftEntityTag.java
++++ b/src/main/java/org/bukkit/craftbukkit/tag/CraftEntityTag.java
+@@ -0,0 +0,0 @@ public class CraftEntityTag extends CraftTag<net.minecraft.world.entity.EntityTy
+         super(registry, tag);
+     }
+ 
++    private static final java.util.Map<org.bukkit.entity.EntityType, net.minecraft.resources.ResourceKey<net.minecraft.world.entity.EntityType<?>>> KEY_CACHE = Collections.synchronizedMap(new java.util.EnumMap<>(EntityType.class)); // Paper
+     @Override
+     public boolean isTagged(EntityType entity) {
+-        return registry.getHolderOrThrow(ResourceKey.create(net.minecraft.core.Registry.ENTITY_TYPE_REGISTRY, CraftNamespacedKey.toMinecraft(entity.getKey()))).is(tag);
++        return registry.getHolderOrThrow(KEY_CACHE.computeIfAbsent(entity, type -> ResourceKey.create(net.minecraft.core.Registry.ENTITY_TYPE_REGISTRY, CraftNamespacedKey.toMinecraft(type.getKey())))).is(tag); // Paper - cache key
+     }
+ 
+     @Override
+diff --git a/src/main/java/org/bukkit/craftbukkit/tag/CraftFluidTag.java b/src/main/java/org/bukkit/craftbukkit/tag/CraftFluidTag.java
+index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000 100644
+--- a/src/main/java/org/bukkit/craftbukkit/tag/CraftFluidTag.java
++++ b/src/main/java/org/bukkit/craftbukkit/tag/CraftFluidTag.java
+@@ -0,0 +0,0 @@ public class CraftFluidTag extends CraftTag<net.minecraft.world.level.material.F
+         super(registry, tag);
+     }
+ 
++    private static final java.util.Map<Fluid, net.minecraft.resources.ResourceKey<net.minecraft.world.level.material.Fluid>> KEY_CACHE = Collections.synchronizedMap(new java.util.EnumMap<>(Fluid.class)); // Paper
+     @Override
+     public boolean isTagged(Fluid fluid) {
+-        return registry.getHolderOrThrow(net.minecraft.resources.ResourceKey.create(net.minecraft.core.Registry.FLUID_REGISTRY, org.bukkit.craftbukkit.util.CraftNamespacedKey.toMinecraft(fluid.getKey()))).is(tag); // Paper
++        return registry.getHolderOrThrow(KEY_CACHE.computeIfAbsent(fluid, f -> net.minecraft.resources.ResourceKey.create(net.minecraft.core.Registry.FLUID_REGISTRY, org.bukkit.craftbukkit.util.CraftNamespacedKey.toMinecraft(f.getKey())))).is(tag); // Paper - cache key
+     }
+ 
+     @Override