Originally posted by surfhurleydude
I seriously doubt just adding Trilinear filtering will cut the performance by such an extremely large margin.
Using total trilinear filtering costs about an extra 30% or so performance on ATi cards if I remember correctly even with their agressive adaptive filtering, the number will most probably be similar for nVidia cards.
nVidia are doing some trilinear in UT2003, but not on the whole scene, and nowhere near what they should be for the settings selected in the driver control panel.
As for having a nVidia logo in the game, that should mean the optimisations should be in the game, not via application detection in the driver.