i have no problems at all (Intelcore2 6600 | 2GB ocz DDR2  | 8800GTS PoV) but i had some lag in BF2142 and it was fixed by the microsoft hot fix.

i suggest to install to all Nvidia cards owner

"Hotfix for GeForce customers running DirectX 9 and DirectX 10 applications:
http://support.microsoft.com/kb/940105. This hotfix resolves abnormal application behavior such as crashes and extremely low frame rates when running some 3D applications at very high graphics settings. This issue is not limited to, but has been most commonly noticed on high-end graphics cards and the following applications: Battlefield 2, Battlefield 2142, Civilization IV, Company of Heroes, Half-Life 2, Lord of the Rings: The Battle for Middle Earth II, Supreme Commander, and Tom Clancy's Rainbow Six Vegas."

http://www.nvidia.com/object/windows_vi … fixes.html