Hi @casini3d_
The plant pot doesn’t have a shadow too. I noticed the noise in the shadowed corners. What’s interesting is it’s not on the pillows or in several other shadowed areas of the scene. This is what’s boggled me in trying to get smoothed results for walls and ceilings, and floors sometimes. Even with ray tracing disabled, the results still become somewhat rough looking. The x * y = 1 rule, I think, applies to Level Scale multiplied by Quality in the World Lightmass settings. However, that is not a one-size-fits-all approach. I tried 0.25 scale with 4 quality, the product of which is 1, and it didn’t correct the artefacts / noise. Actually, it got worse. I don’t know the light setup for the scene in the screenshots, but I’d guess that it has a skylight with a higher intensity than the default (1). What is the directional and skylight mobility for each? Is there a Lightmass Importance Volume immediately around the room, or is it around a larger structure that contains the room?
Start there, I guess…