I am getting an uneven framerate in dx11(like everyone else), around 25-60 fps. I have noticed huge drops in performance when looking in the direction of AI's, or when enemies show up. But the huge puzzler, is that when playing in dx9, there is NO boost in performance, nor is there a steady framerate. So scaling back the visuals offers nothing, no FPS boost. WTF

AMD Phenom x4 955 3.6ghz OC
Sapphire HD 7870 2 GB
Corsair 8GB 1600mhz
Samsung 256GB SSD
Catalyst 12.11 beta 8
Fraps