I was going to start a new thread on this very subject but thought I should look first.
I am having the same problem as wirenut is/was having except it happened when I was in the designer.
This is the 1st time this has happened to me as I normally don't alt anything during a match.
Yes, I use an AMD Radeon card and have also sent along a crash report from when this happened.
I retract my earlier statement as full screen is a mess now. Going back to desktop not only reduces performance it corrupts the graphics. Screen looks washed out and over exposed, bushes glow and divots are just rectangular squares. Guess I will have to play in windowed mode until this gets sorted out.
Wanted to add...this is the ONLY game that this happens to. I alt tab a bunch on other games and nothing happens to the graphics.
Starting to think "that other" game might be worth looking at if it runs on Radeon.