hi when playing call of duty ghosts big black shapes randomly appear covering nearly half the screen coming from my gun, the shapes moves with the gun also, im just wondering if this could be a problem with my graphics card or the drivers im using, other games don't tend to get this problem tho and ive also tested my pc on 3dmark11 and dont see any similar problems. I've noticed that when the black patch on the screen appears it goes away if i change my weapon, but it always returns when i go back to the weapon i had when it started, ive tried printing the screen but just get a black image and nothing else