- use bigger lightgrid
- dont use too small _lightmapsize
- clean up your map and remove all the shit you dont rly need.
- save as many polygons as you can
- dont use too fancy q3map2 light compile parameters - the more data your light stage produces, the worse your fps.
(-light -fast -patchshadows should do it for this space map without alot of detailed stuff in it)
- you could even try to use lightmapscale greater 1 in certain areas.
- compress textures - you dont need 2,5 mb targa files in a map (dunno if you do but i saw that
in other maps.
- use lightgrid shader from q3map2