I'm trying to get Tribes to work with my Viper 330 (4mb). Whenever I enable OpenGL it slows to about 1 frame every 3 seconds (Windowed mode screams by comparison). I realized I hadn't tried anything else so I tried an OpenGL screen saver and it did the same thing. I've tried both Diamond's and the reference drivers. Also tried 3 different machines... D3D works beautifully with other games. I've seen an 8mb Viper 330 work with Tribes ok. Does the 4mb ver run OpenGL with any speed?