Surgeon made quite a few optimisations.
http://surgeon.users2.50megs.com/quake/patches/Qboost4.txt"Recomended config for DM (68060/66):
NTSC, viewsize 80, fov 100, pixelmode 2, d_mipcap 3, snd_frequency 5513
Remember to use the parameter -particles 1, when starting Quake!
This config gives me 21.80 FPS with timedemo demo2."
