Have a look here (http://www.steampowered.com/forums/showthread.php?s=&threadid=155374) for an interesting thread about CS:S and optimising netcode.
BB's summary:
Set the following in your autoexec.cfg:
cl_smooth 0
max_fps 60 (I know we all have flashy new graphics cards but for me it stops all the stuttering and lag until they can get things fixed)
I set max_fps 60 instead of the suggested 50 because you are sending/receiving about 30 packets/sec and 60 seems to fit better with that (for me anyway)
use net_graph 1 to see in/out data
Sheesh, that took a while to read through :(
Summary for those who can't be bothered:
"CS:S netcode is pants. Valve may or not get around to fixing it."
TL.
:lmfao: :lmfao: :lmfao: :lmfao:
nice summary tl, that had me touching cloth!
I love the "your title eliminated 98% of the forum users" comment. So true!