Rendering squares

[peteristrate]

The pesky squares have returned.
As you can see, there are some large squares, in the render (visible on the 2 tall kitchen units).

It's rendered using RTX, on two 2080Ti.

Here's the scene archive: https://www.dropbox.com/s/id92l19smi...ugged.zip?dl=0

[matanov]

Hmmm I thought we fixed this one. It is from the geometry background with Cast Shadows =OFF. I'll check what can be done.