I am having trouble playing Assassin's Creed 2 for PC. The game play is sluggish and choppy when using higher resolutions despite having the hardware to handle it. I have tried the game on 2 boxes thus far:
Sony Vaio VGN F111FX
1.7GHz Core i7 quad
NVIDIA GeForce 310 with CUDA
2.66 GHz AMD Phenom X4 quad
NVIDIA GeFORCE 9500GS
Both of these machines are more than sufficient to play this game but here is the problem:
When I play the game using higher resolutions it is choppy and sluggish. As I gradually lower the resolutions the game gets faster and better. By the time I get to a point where it is playing like it should I have lowered my nice 1080P resolution to something like 800x600. I don't have this problem with any other games on either of these systems. Dead Space, Bioshock, Empire at War, all work fine. I can't figure this one out. I need some help.