I think it might be an issue with the game itself.
Another recent Ubisoft console port, Assassin's Creed II, ran poorly on both my GTX285 and my HD5870. The game had all sorts of issues: the most horrible screen tearing I've ever seen; dancing, flickering shadows; stuttering; random FPS drops in certain areas regardless of graphical settings; turning VSync on caused the game to become jerky and destroyed performance; etc.
Add the draconian DRM on top of that and I decided to pass on Splinter Cell: Conviction. After dealing with Assasin's Creed II (great game btw, bad port), I figured Conviction was going to be more of the same headaches.
Another recent Ubisoft console port, Assassin's Creed II, ran poorly on both my GTX285 and my HD5870. The game had all sorts of issues: the most horrible screen tearing I've ever seen; dancing, flickering shadows; stuttering; random FPS drops in certain areas regardless of graphical settings; turning VSync on caused the game to become jerky and destroyed performance; etc.
Add the draconian DRM on top of that and I decided to pass on Splinter Cell: Conviction. After dealing with Assasin's Creed II (great game btw, bad port), I figured Conviction was going to be more of the same headaches.