NVIDIA has fixed this problem in NVIDIA Beta driver v275.50 and higher. Please download these new drivers to address this problem with Crysis 2. You can download new drivers here: http://www.nvidia.com/Download/Find.aspx?lang=en-us.
3D Vision with eye synchronization problem in Crysis 2 DirectX 11.
When using NVIDIA driver v275.33 or previous versions, users have encountered problems with 3D Vision eye synchronization when playing Crysis 2 DirectX 11 mode. When playing the game, only the left eye image has new frames displayed while the right eye image may stay static.