Hi @Nick_Tarasov @MikeArtist and others,
I have found time to update the repository from 5.03 to 5.1.1. I have updated the README to reflect this.
I have updated the original post to 5.1.1 as well
's GPULightmass - Development / Rendering - Epic Developer Community Forums (unrealengine.com)
The new updated README is at
GPULightmass-patch-511/README.MD at GPULightmass-patch-511 · jimshalo10/GPULightmass-patch-511 (github.com)
There is a preview working version for 5.3 Preview, which requires building with VS 2022 described in
UE5.3 Preview GPULightmass description linked to (ue5-main)