After baking APV I get strange banding.
The banding is not visible everywhere, and it appears irrespective of type of mesh.
Like so:
Using Probe Adjustment Volumes invalidating probes in various ways alters the effect but it does not correct it.
In the image above you see the result after PAVs have encompassed the boxes.
In the Image below you see the result after PAVs have removed the probes inside these boxes
And in this last image without any PAVs.
It feels like some kind of shadow projection at times.