diff --git a/patches/server/0212-Optimize-collisions.patch b/patches/server/0212-Optimize-collisions.patch
new file mode 100644
index 000000000..c17a4b5bc
--- /dev/null
+++ b/patches/server/0212-Optimize-collisions.patch
@@ -0,0 +1,79 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: DoctaEnkoda <bierquejason@gmail.com>
+Date: Tue, 11 May 2021 00:28:13 +0200
+Subject: [PATCH] Optimize collisions
+
+
+diff --git a/src/main/java/net/minecraft/server/level/WorldServer.java b/src/main/java/net/minecraft/server/level/WorldServer.java
+index db91e4ca583f676fe74d35a2368b3c39ab58cd9a..fbd60ebfcd04c288c8ea2353722d06ef4850dbeb 100644
+--- a/src/main/java/net/minecraft/server/level/WorldServer.java
++++ b/src/main/java/net/minecraft/server/level/WorldServer.java
+@@ -678,16 +678,10 @@ public class WorldServer extends World implements GeneratorAccessSeed {
+             }
+         }
+ 
+-        int minBlockX = MathHelper.floor(axisalignedbb.minX - MCUtil.COLLISION_EPSILON) - 1;
+-        int maxBlockX = MathHelper.floor(axisalignedbb.maxX + MCUtil.COLLISION_EPSILON) + 1;
+-
++        // Purpur Start Rebase - Calculate when needed only
+         int minBlockY = MathHelper.floor(axisalignedbb.minY - MCUtil.COLLISION_EPSILON) - 1;
+         int maxBlockY = MathHelper.floor(axisalignedbb.maxY + MCUtil.COLLISION_EPSILON) + 1;
+ 
+-        int minBlockZ = MathHelper.floor(axisalignedbb.minZ - MCUtil.COLLISION_EPSILON) - 1;
+-        int maxBlockZ = MathHelper.floor(axisalignedbb.maxZ + MCUtil.COLLISION_EPSILON) + 1;
+-
+-
+         BlockPosition.MutableBlockPosition mutablePos = new BlockPosition.MutableBlockPosition();
+         net.minecraft.world.phys.shapes.VoxelShapeCollision collisionShape = null;
+ 
+@@ -697,6 +691,13 @@ public class WorldServer extends World implements GeneratorAccessSeed {
+             return ret;
+         }
+ 
++        int minBlockX = MathHelper.floor(axisalignedbb.minX - MCUtil.COLLISION_EPSILON) - 1;
++        int maxBlockX = MathHelper.floor(axisalignedbb.maxX + MCUtil.COLLISION_EPSILON) + 1;
++
++        int minBlockZ = MathHelper.floor(axisalignedbb.minZ - MCUtil.COLLISION_EPSILON) - 1;
++        int maxBlockZ = MathHelper.floor(axisalignedbb.maxZ + MCUtil.COLLISION_EPSILON) + 1;
++        // Purpur End
++
+         int minYIterate = Math.max(0, minBlockY);
+         int maxYIterate = Math.min(255, maxBlockY);
+ 
+diff --git a/src/main/java/net/minecraft/world/level/ChunkCache.java b/src/main/java/net/minecraft/world/level/ChunkCache.java
+index b547eb352f90f68cf36ffb82e43ad7acb1892f6a..456ef170f8885ad42c3c2bd2a54c5bc46bfe30cd 100644
+--- a/src/main/java/net/minecraft/world/level/ChunkCache.java
++++ b/src/main/java/net/minecraft/world/level/ChunkCache.java
+@@ -60,16 +60,10 @@ public class ChunkCache implements IBlockAccess, ICollisionAccess {
+             }
+         }
+ 
+-        int minBlockX = net.minecraft.util.MathHelper.floor(axisalignedbb.minX - net.minecraft.server.MCUtil.COLLISION_EPSILON) - 1;
+-        int maxBlockX = net.minecraft.util.MathHelper.floor(axisalignedbb.maxX + net.minecraft.server.MCUtil.COLLISION_EPSILON) + 1;
+-
++        // Purpur Rebase - Calculate when needed only
+         int minBlockY = net.minecraft.util.MathHelper.floor(axisalignedbb.minY - net.minecraft.server.MCUtil.COLLISION_EPSILON) - 1;
+         int maxBlockY = net.minecraft.util.MathHelper.floor(axisalignedbb.maxY + net.minecraft.server.MCUtil.COLLISION_EPSILON) + 1;
+-
+-        int minBlockZ = net.minecraft.util.MathHelper.floor(axisalignedbb.minZ - net.minecraft.server.MCUtil.COLLISION_EPSILON) - 1;
+-        int maxBlockZ = net.minecraft.util.MathHelper.floor(axisalignedbb.maxZ + net.minecraft.server.MCUtil.COLLISION_EPSILON) + 1;
+-
+-
++        
+         BlockPosition.MutableBlockPosition mutablePos = new BlockPosition.MutableBlockPosition();
+         net.minecraft.world.phys.shapes.VoxelShapeCollision collisionShape = null;
+ 
+@@ -79,6 +73,13 @@ public class ChunkCache implements IBlockAccess, ICollisionAccess {
+             return ret;
+         }
+ 
++        int minBlockX = net.minecraft.util.MathHelper.floor(axisalignedbb.minX - net.minecraft.server.MCUtil.COLLISION_EPSILON) - 1;
++        int maxBlockX = net.minecraft.util.MathHelper.floor(axisalignedbb.maxX + net.minecraft.server.MCUtil.COLLISION_EPSILON) + 1;
++
++        int minBlockZ = net.minecraft.util.MathHelper.floor(axisalignedbb.minZ - net.minecraft.server.MCUtil.COLLISION_EPSILON) - 1;
++        int maxBlockZ = net.minecraft.util.MathHelper.floor(axisalignedbb.maxZ + net.minecraft.server.MCUtil.COLLISION_EPSILON) + 1;
++        // Purpur End
++
+         int minYIterate = Math.max(0, minBlockY);
+         int maxYIterate = Math.min(255, maxBlockY);
+