Because most of the retards currently hosting are using outdated lua that was bugged in the first place.
Such as this Brian retard who sits in the channel asking if NS2 is complete yet, and asking for personal favorites such as flying skulk and asking if someone could make him a map which has his name on it 
But if you want to you could try getting the latest lua from here http://wiki.github.com/Nayruden/NS2lua/ i don't know if they've fixed the mouse look yet, as about 1 hour ago before dinner i attempted to use it and my mouse was unresponsive... the git hasn't been working since uzguz uploaded some modified player.lua :<
Also performance issues can be linked to many things from memory leaks to poorly coded engine, but my on theory is that they are using d3d instead of opengl :< which has never worked well for me.
Last edited by Archie (14-04-2010 18:37:13)
The Flying Fish: My new years resolution is to highlight Taz on irc with a link to this post.
bunna: Mine are currently 1680 x 1050 and 1280 x 1024
ns2cn.com = chinese ns2 info forum = ONOS.CC(thanks xMd)