Trere is some annoying terrain texture flickering. I watched it on Kerbin, Mun and Minmus at least. It can happen during low altitude flight or rover moving. Or without any reason.
Here my video with Minmus flickering: https://www.youtube.com/watch?v=6bcHLJe198k
Yes, I have some mods, but I think it's only core game bug. For example, you can see this bug in this video of russian KSP streamer - https://www.youtube.com/watch?v=HvyK8ow6Sdg (5:48-6:10).
Hello, I don't know what is your current progress on this issue, but I have cobbled together a fix for it in my mod scatterer.
It involves modifying the screenSpaceShadows shader:
1) When the ratio of farClipPlane/nearClipPlane is high, I found that precision suffers when reconstrucing position from depth using the ray method, instead I use the inverse projection method which usually has lower precision but in this case is actually better, you can do this by using the shadow subshader tagged "PCF_SOFT_FORCE_INV_PROJECTION_IN_PS".
2) I add a bias to the shadow receiver based on depth, I found that precision is good near the camera but degrades further away, this seems to fix all issues for me.
Hope this is of use.