i finally left the sw fuhquake shit and installed ezquake... much easier with gl and stuff...
it really laggy with sys high priority 0
its better with sys highpriority 1
with sys highpriority 1 the lags that come frezzez the whole computer a while not the usuall average lag trough the whole game.
any ideas whats the problem...? im still more happy playing now then have the lagg trough the whole game.
another question its impossible to play with winamp and sys high priority 1 too.
btw.
its NOT my connection even demos lags,
i got a tip to play with the lowest details and stuff and i have done this.
better but still same problem.
1-AMD Athlon™ 64 Processor 3500+, 2211MHz (0% Load) .:. usage: 454/512MB (88.67%) .:. NVIDIA GeForce 6200, 1024x768/32bit/60Hz
Windows XP Professional, Service Pack 2 (5.1 - 2600), 162w 5d 14h 2m, 4d 9h 9m 51s .:. 3.75GB/233GB(1.6%) free.
my ram is 512 pc3200 200 mhz... =/
i think it should run smoothly anyway
suggestions?

I play with sys_highpriority 1 and sys_yieldcpu 1. You might need to try the second option.

This is totally unscientific and I'm not sure if it actually makes sense.

Which version of ezquake are you running ?
And I'm assuming the 162 days are since you installed, not your uptime (if it is please reboot and try again).

sys_yieldcpu 1 was on...

latest version biomass 1.9.2 stable

http://wiki.quakeworld.nu/Smooth_Quake

could it have anything to do with hz? i have 60... old crt screen
tryed everything in that link johhny have the same problem still..

try to launch with
start /ABOVE_NORMAL ez...
(without sys_yieldcpu 1).

That workaround helped me with lags in another game (high and normal priorities caused lags).

Tryed that also... probly the hdd that is broken i think =/