Hello. Today i tried running the dx11 for the first time. On menu its ok, the problem comes when i go to track. I get on pits all good, when i press go i hear the car start, 1 or 2 second after the game crashes. I reverted back to dx9 and its ok, tried various cars and tracks. Also i use a surround setup Is sli a known problem on dx11? SETUP: cpu-i7 4770k gpu's-EVGA gtx 770sc ram-16gb Windows 7 ultimate x64