Visible grid in reconstructed mesh - recons_by_chunk.py

[stephendps]

Hi,

When running the recons_by_chunk.py example with chunk_size=20.0 (as suggested in the code comment to further reduce memory footprint), there is a visible grid in the reconstructed mesh

My environment is Ubuntu 22.04 with a 4060 Laptop GPU (8GB) and the code is untouched after following the install instructions in the README.

I've also ran into this issue when attempting to reconstruct my own .ply file and would really appreciate any hints at solving it.