Doom 3 performance in hell

[Cali3350]

Im wondering what you 6800 owners out there are getting in the hell level for Doom 3? I usually play 1280*1024 4xaa High Quality (not Ultra - i cant stand the short pauses) and in the hell level...well, my framerate goes to crap. In the beggining i get ~25-30fps and in later parts of the level it goes all the way down to ~15fps. Just wondering if everyone else gets this? This is with Opts OFF and High Quality selected btw - 66.51 drivers.
Thanks for replies...

[crainger]

Ummm, its been lil while since I last played, but I had no probs in Hell, in fact I quite liked it. But I'm happy I was able to leave... Framerate was smooth from start to end.