Its not just ur game that starts laggin the server FPS goes down. Just on that map tho.. We had 7 players on and it was down to 6 FPS server side. And if i log into the server pc and look at the CPU usage its like 50% and 1,5Gb of ram free. So its sumthing else and i dont know. Im using a E6600, 7950GT Extreme, 2Gb 800Mhz ram..
Server PC is.
P4 3.2Ghz
2.5Gb RAM
Raptor 10.000rmp HD
6800GT gfx
its just that map that does it.