If i remember correct, i was following the D81 direction south and southwest.
When i saw the sharp edge of whatever, i first thougt it was the underlying orthophotos. Sometimes the photos were taken at different times, so the colours do not match. But that was not the case. I then paused the sim and went into SkyMaxx's Cloud Configuration and disabled the cloudshadows. Immediately the issue was gone with the cloudshadows. Turning on the cloudshadows again brought back the sharp shadowedges.