NFS hot pursuit stutter with gtx460m even at high fps

Hi



Could anyone tell me why hot pursuit stutter with my GTX460m card even at high framrates?. According "fraps" the game run mostly at 60 frames(fraps wont go higher than 60). I notice then the game drops to 50 with much cars and wet asphalt it stutters. Dirt2 can run even at 20 fps without stutters, so i wounder is hot pursuit very bad coded to pc?.



Anyone who could help me here?



Thanks in advance



PS: i have not playd online so this is based on single player

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