I'll need to do more testing to see if this is specific to particular content but I've noticed odd things with the shadows on the SD40-2: This only seems to happen around the front truck. GPU Drivers are up to date.
I had these artefacts too, als underneath the light cones. After a ticket dtg analyses my system and said it was my system causing this artefacts. Later with a new computer the artefacts where gone. I haven't got any of these issues with other games.