CPU ATI Phenom II x3 720 BE ​​(AM3​​

​​- 2,8GHz @ 3,4GHz
GPU GF GTS250 ​​- 700​​/2000​​/1500MHz @ 760​​/2400​​/1780MHz
RAM 2x2GB DDR3 1600 CL9 @ 1333 CL7
I played only the demo (EU customer

) and i have major performance problems running it with DX 10 (GTS250 suppoorts DX10). It jerking every second and it's nearly unplayable. It does not depend on settings a lot. I can also see broken textures with minimum settings.
It runs absolutely smoothely with DX9 on highest possible settings.