My spec:
CPU: AMD Athlon II X4 640 3.0Ghz
GPU: Sapphire HD6870 1024mb
Ram: 4GB RAM DDR3
OS: Windows 7 Ultimate 64bit
But this guy: http://www.youtube.com/watch?v=CNIsMjm-lLQ has almost the same system but runs smooth :S?
I have the latest driver version etc etc.
Some people will say: You system svcks, but I think there is something else wrong here =(