[Solved] I am getting weird lighting issues on my Probuilder model.

These different parts are separate meshes, but they are all hard edged - none are in smoothing groups.

They are essentially all planes, rather than 3d walls

Is this expected if you separate out meshes into different segments?

I've tried rebuilding, clearing my GI cache, conforming normals, deleting any smoothing groups, subdividing, triangulating.

Any idea how to fix beyond that?

[Edit] Also I am not using lightmaps. Using Universal Render Pipeline. Unity 2020.3.15f2

Thanks

 

Figured it out, just had to set Per Pixel lighting on the UniversalRenderPipeline Asset

I'll leave this here for others.