Blocky / jagged indirect realtime lightmaps?

I’ve tried about 100 thing to try and resolve this issue, and Im simply stuck.

My realtime indirect lighting just comes out blocky. See screenshots

Im using Unity 2017 on MacOS… the cube is emitting realtime emmsive light… the model was exported from C4D (the geometry / meshes arent the issue since the same effect happens on unity primitives)

mesh UVS set to high quality / dense

About to tear my hair out, please help!