Rednaxela kd-tree 24 v 50
Which is faster for Rednaxela's kd-tree Bucket size 24 or Bucket size 50
24 is probably faster. Though it's largely irrelevant since it's probably going to be faster than anything else in either configuration anyway.
Let me show you something Rednaxela's and Skilgannon's kd-trees are tied in speed. And Skilgannon's kd-tree uses a bucket size of 50. You said lower bucket size is better. Therefore if Skilgannon's kd-tree used a bucket size of 24. It might be faster than Rednaxela's kd-tree.