A Real Stumper of a Problem

Hi everyone, Someone I know is having problems with CFS2. It works fine offline, but when he plays online he starts out at 90-110 fps but within 5 minutes hes down to 3 fps. then if he goes to ready room, when he tries to re-enter game it kicks him back to RR and he has to unready and ready up again. If he goes to another room the same thing happens. He has uninstalled and reinstalled zone files, deleted cookies, checked for shadow drivers, reinstalled CFS2, and he is on cable with 2.6mb download speed and 366kb upload. He has tried turning sound off and is trying to get to sysops at the zone.
Seems he installed CFS3 and had problems, wasn't happy with it, whatever, so he uninstalled it. He is running win 98se and has reformatted the computer twice. Defraged and ran skandisk, he only has CFS2 and Age of Mythology installed. His computer worked fine before the CFS3 install. could there be remnants of dx8.2 even after reformatting? Does he have to run DxBuster or something? We are all stumped. He has checked with M$ and has the latest drivers in.
Any ideas would be very appreciated. Thx and ~S~
Seems he installed CFS3 and had problems, wasn't happy with it, whatever, so he uninstalled it. He is running win 98se and has reformatted the computer twice. Defraged and ran skandisk, he only has CFS2 and Age of Mythology installed. His computer worked fine before the CFS3 install. could there be remnants of dx8.2 even after reformatting? Does he have to run DxBuster or something? We are all stumped. He has checked with M$ and has the latest drivers in.
Any ideas would be very appreciated. Thx and ~S~