I wonder why some have this mouse problem. My friend had this but I dont. I am running windows 7 and Nvidia gpu. I see you have Ati cards so maybe it is driver problem. Unchecking Disable Aero is a must also on my computer.
I once had those black buildings in Skhval but reinstalling DCS World fixed those. I still have texture problem in Shkval that go away by moving it in beginning of flight. A-10 TGP doest have any problems, but climbing F-18 and Su-33? crash my game on A-10 missions.