Going into true fullscreen causes my game to crash.
I also have been getting drastically varied FPS performance.
This, and in combination of having to close and reopen the game (which I can't do in true fullscreen because it won't surrender to crtl+esc or even respond to alt+f4.
I've spent 5 hours trying to get my system to run the game (I have an older setup, AMD HD7700, i5-750 processor) and it gets more frustrating the longer I have to try and get the game to run. I spend 10 minutes in a match looting to either have the game crash, or have too low FPS to win gunfights.