This command line is a good compile to start building off of when you want to produce a "final" compile of your map. It is by no means perfect for every map, but a good place to start tweaking based on your own maps particulars.

"C:\path\to\q3map2.exe" -skyfix -meta -v "C:\path\to\mapname.map"
"C:\path\to\q3map2.exe" -vis -v "C:\path\to\mapname.map"
"C:\path\to\q3map2.exe" -light -fast -patchshadows -samples 3 -bounce 8 -gamma 2 -compensate 4 -dirty -v "C:\path\to\mapname.map"
Games with the r_overbrightbits value enabled by default (i.e. Quake III Arena) may want to use the -gamma and -compensate switches. Otherwise, remove from the compile settings above.

I read this information on internet and i don't know if this procedure is useful.