NVIDIA Linux Anti-Aliasing Performance Update
The most demanding form of anti-aliasing offered by nvidia-settings in the NVIDIA 331.20 driver was 4x super-sampling with 4x multi-sample anti-aliasing. This mode caused Doom 3 to lose over 70% of its frame-rate on Linux.
Fortunately, the GeForce GTX 770 was still delivering above 60 FPS for all Doom 3 1920 x 1080 tests done of the different AA levels.