Update: Jedi Academy t1_rail map fog works very nice!

(though my ATI core fails in certain points, that's a problem I can reproduce, but I doubt that it has anything to do with your port)

I tested Jedi Outcast and it performs much, much better than QIII and RTCW. I am running it on 1280x1024 with max details and there is no single fps drop regardless of the scenery and number of enemies.

Now, where is your next game port? ;)