I have a very similar problem.
the game crashes to desktop in DX 11 after a very short playtime. There are no issues in dx 9 but the game doesn't look as good.
My config:
Intel core i7 2600 (3,4 Ghz)
Nvidia Geforce GTX 570
8GB RAM
Creative X-fi extreme music.
Windows 7 Professional x64 SP1
I have tried installing 267.24, 267.32 and 267.46 drivers but they help only slightly, the game still crashes below 5 minutes of playtime. (driver stopped responding - error)
I have tried virtually every advice posted on these forums, I have been plying with game and driver settings without any luck.
I have already tried disabling every option possible in dx 11 renderer, I have even tried running low settings in dx 11 mode, the game still crashes.
And no, this is not my hardware, the graphics card is brand new, I have bought it specifically to play dragon age 2 the way it is meant to be played

I have been playing battlefield, metro 2033 and crysis without any issues what so ever. I don't have any other issues with the game in dx 11, the game does not lag or stutter, it only crashes to desktop after a short period of gameplay time.
In high settings it takes somewhat longer for the game to crash but still.
I have also tried installing 267.26 driver but the crashing still persists.
DEVS: please let us know when you will release a patch for the game to fix crashing with dx 11 renderer.
Modifié par Raydenos256, 15 mars 2011 - 02:17 .