I got p2 300 with 96 megs of ram (recently pumped it to 160 megs, but my FR is still the same), voodoo 3 2000 AGP 16 megs runnign Win98
I get 27fps all the time, going down to 23 in furballs. The only thing that hits my FR are clouds (in a small way) and smoke (which literally KILLS my FR when close).
You really have to go to START->RUN type in MSCONFIG, choose SELECTIVE STARTUP, then go to the STARTUP tab on the top right and uncheck EVERYTHING EXCEPT:
Sys Tray
Scan Registry
And leave check anything else you need.. aka, Antivirus, cable modem (if aplicable), firewall. Anything else... and I mean ANYTHING else is just JUNK that get loaded into you memory when windows starts up..and it will eat your performance.
Once you done, click APPLY, then OK, then restart computer. Check your resources then.
In my system I only have my firewall, my antivirus and my cable modem loaded up.. my sys resources are 97% free.
Also, remove any background wallpaper you may have, that steals resources too.
Hope you reading this as well Frenchy, mr I get 7fps in furball with a rig much better than mine

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