res in game and on your computer,,change them both to 1024 by 768,,,i know when i had mine set up at max,i kept getting disco every 3 min like you discribe for no reason,,lol,,changed it and i didnt get the disco as much,,<~~every one gets that anyways,,but,,i would get it so fast i could hardly type to my squadies before i got the boot,,lol
so change your res in aces high on the clipboard video settings,,and in your computer controll panel and see if it helps:)