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xep624: Wow... that sucks... I played this game and had fun with it. Visuals were very nice. Maybe try the options first and check the camera settings and display settings - change resolution and see how it will affect. I have very similar settings to yours on my ASUS laptop and game runs well. I hope you will solve your problem.
astraldemon: I said in my post I have done that...
What version of Catalyst drivers do you have? Asking out of curiosity, perhaps a driver update may solve the problem?