Server rates

Hey there. I’m currently running a server at tickrate 66, on a 100mbps line. Priority is set to high, affinity is set to 1 core (although all cores makes no difference either), and am also using the srcdspingbooster tool to enable high timings. However, our FPS seems to plummet when we get to 20+ players. Could someone give me some advice on the rates or point out what I am doing wrong? Here is my current server.cfg:

fps_max 600

sv_minupdaterate 0
sv_maxupdaterate 66

sv_mincmdrate 0
sv_maxcmdrate 66

sv_minrate 0
sv_maxrate 15000

sv_use_steam_voice 0
sv_client_cmdrate_difference 1
sv_client_predict 1
sv_client_min_interp_ratio -1
sv_client_max_interp_ratio -1

Thanks for any advice.

Your max rate is far too low. Try 95000

[editline]19th June 2011[/editline]

Try an fps_max of 256.

Thanks for the advice - shall get back to you on whether it worked.

Seemed to have worked on the whole - but there are still lag spikes here and there. Thanks <3