Hello,
I have noticed that when on windows, i would hardly ever lag whenever i entered a Human/Alien base (at most 2-4 less FPS from 30-40FPS). On the other hand, with Ubuntu Linux (with the exact same graphic settings as windows), it would drop from 30-40FPS to 3-5FPS. I know for sure that i have the drivers installed. When i run tremulous i never run any other program BUT tremulous.x86. What's wrong? Thanks!