Question HDRP Lighting issue with Lightmap?

Hi,

I am fairly new to HDRP coming mainly from URP and am having an issue with some pixelated looking shadow areas. These disappear when i turn off shadow map. I have played around with a lot of settings including contact shadows but can't seem to edit this.

Anyone have any ideas?

 

These don't look lightmap related?

Are these artifacts affected by HDRP's bias (normal and... depth something bias ?) settings that HDRP has for lights?

 

"Slope-scale depth Bias" it really rolls off the tongue!


(from here: https://docs.unity3d.com/Packages/c...h-definition@14.0/manual/Shadows-in-HDRP.html )