Hi,Just adding my case here. Don't want this issue to fade. In my setup I have discovered that the issue can be triggered by other graphics apps happening in the background. VATSpy is a key player here. Sometimes by app switching from FSX and using the app will bring on the aberations, and can often be used to restore it. Kind of odd.I am also wondering if the thing that is causing is the rain effect in the Virtual Cockpit. Seems the only graphics related thing supported by PMDG and not by any other vendor. I also noticed the shading and texturing looks very similar.That's my contribution.Russell Diehl