--- a/net/minecraft/world/level/CollisionGetter.java
+++ b/net/minecraft/world/level/CollisionGetter.java
@@ -35,6 +35,12 @@
         return this.isUnobstructed(entity, Shapes.create(entity.getBoundingBox()));
     }
 
+    // Paper start - optimise collisions
+    default boolean noCollision(Entity entity, AABB box, boolean loadChunks) {
+        return this.noCollision(entity, box);
+    }
+    // Paper end - optimise collisions
+
     default boolean noCollision(AABB box) {
         return this.noCollision((Entity)null, box);
     }
@@ -44,11 +50,13 @@
     }
 
     default boolean noCollision(@Nullable Entity entity, AABB box) {
+        try { if (entity != null) entity.collisionLoadChunks = true; // Paper
         for(VoxelShape voxelShape : this.getBlockCollisions(entity, box)) {
             if (!voxelShape.isEmpty()) {
                 return false;
             }
         }
+        } finally { if (entity != null) entity.collisionLoadChunks = false; } // Paper
 
         if (!this.getEntityCollisions(entity, box).isEmpty()) {
             return false;
