one method from
TechTV:
"After installing the retail version of "Jedi Knight II: Jedi Outcast," we patched it to version 1.04. We then unzipped assets2.pak3 found in Gamedata\Base folder, extracting the file jk2ffa.dm_15 to the Base\Demos folder and renaming the demo to jk2ffa.dm_16. You can now run the demo from the command line in the multiplayer game by typing "timedemo 1" and then "demo jk2ffa." Scores are recorded as frames per second (fps)."
another method from
3DVelocity:
"Firstly open the multiplayer game and press shift and ` (the usual console key) then type the following instructions.
timedemo 1 (the notice that the time demo is cheat protected is normal)
devmap ffa_bespin
disconnect
timedemo 1
demo jk2ffa
You will need to then press the console command and use page up to see your frames per second."
I wanted to know too so I searched on google.
