I dont mean to be rude but ever since you implemented PartCache, this module has been getting a bit worse. Hopefully the new algorithm will solve these issues but for now here is my modified version of this module. Ive re-formatted it and it works like a breeze. Just make sure to send over the voxels to the client and its pretty much seamless and does not use PartCache.
VoxBreakerCustom.lua (38.4 KB)
Here is how I handle the voxels on the client:
Its in TypeScript but im sure anyone can understand the ideas here.