Lighting looks splotchy or bumpy when built.

Detail-lighting preview, Lightmap sampe: https://imgur.com/a/HwL6xkT

My lighting is bumpy or uneven after it's baked, and I'm not sure what's going on.

All lights are static, all meshes are static. Light Map Res is a little low at 64, which accounts for the low-res shadows(I am fine with this) but not how uneven the lighting is(which I am not fine with). I've tried building with production and preview lighting. There is a lightmass volume present in the scene. I adjusted the Indirect Lighting Quality and Indirect Lighting Smoothness. Adjusting smoothness helped the issue a little, but this is as good as it's gotten.

SOLVED: The issue has been fixed entirely by moving my point lights from 10cm beneath the ceiling to 30cm.