NVIDIA plans on releasing new Forceware drivers on Wednesday that are optimized for improved performance in Oblivion.

Our developer relations team worked closely with Bethesda to optimize game performance, which also included making some driver changes to fix/enhance performance in certain areas.

Our performance testing shows no two benchmark runs are identical in exterior scenes, due to Oblivion randomly placing grass and rocks, changing the amount of grass, and varying other aspects of the terrain.

I imagine ATI will release new Catalyst drivers with the same goal in mind, as well. It’d be in their best interest to, given the hype level of this game.