I get the same kind of "poo" fps, but I only have a Duron 750 with a GeForce 3 Ti200. I sometimes get 8fps in SP mode when the action gets heavy, and that's at 800x600. I noticed something odd though that might be contributing to it. Hopefully someone else has seen this too.
When I run "Configure.exe", it detects all of my system specs just fine, except one. It shows my "VidMem Range" as being 32MB. My GeForce 3 Ti200 has 64MB of RAM. What gives? That extra 32 would really help me out, if it's not using it.
[Edit: I just remembered something else. It shows my MHz as being 1050, when I only have a 750. It would seem that somehow this file is linked to the config.csv file, but I have no clue how. Gonna keep poking around, in case anyone else has the same problem as me.

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[This message has been edited by LordPhobos (edited January 28, 2002).]