I have a pair of Galaxy GTX 680 SOC cards I'm running in SLI (or attempting to) using an Asus P8Z77 WS mobo. When I launch a game in full-screen, the image rapidly jitters back and forth (slots 1 and 2) or is discolored (slots 1 and 4). I have used the 301 and 304 beta drivers and get the same results. Does anyone have any suggestions? No issues when running in a window.