I had never seen this in all my years of gaming till I got this computer a couple years back. It did it on Sims 3 when I first got it and I thought it was a glitch in the game. Then I got APB a few weeks ago and it's doing it too. Thinking there's something wrong with my video card. I have a hard time describing it, it's like a light show on crack or an acid trip with flashing lights and "shards" of colors.