OpenGL games running in Ubuntu 12.04 and Ubuntu 12.10 in fullscreen mode very slow. FPS is very low (it lags). When I switch in the game settings in Windows Mode (same resolution 1680*1050) the game runs perfectly.
Graphics: NVIDIA GeForce GTX 460
Driver: NVIDIA 304.48 (I now use a beta driver, but in the older drivers the games are slower.)