Problem with ambient occlusion

Hi. I am working with lights and I got this (screenshot)

Can somebody explain why, and how to fix that?

Not an ambient occlusion issue, your lightmap resolution is too low.

I increased the resolution to 1024, but these artifacts are still there, so I think your solution is wrong.

What does the lightmap density view look like?


For more clarity I am using post processing and maybe I did something wrong

Lightmap resolution is too low… All of your surfaces should be at least the same/similar hue of green that your right wall has.

Also make sure you are building your lighting at production quality, and that your lightmass importance volume surrounds the whole scene (not just the room)