Newer SFFT alpha 16 driver release is available to download: it comes out with two packages, one for Voodoo3 cards and one for VSA-100 cards.
This was built without 3dfx Tools so you would install by "Update Driver" table in "Device Manager" --> "Video Card" panel.
Your feedback is useful giving us help to developing so you could post your report in SFFT Offical topic at 3dfxzone forum.
Voodoo3 package has a fix for simoultaneous monitor and TV output in PAL systems.
Voodoo5 Package has stability fixes for NFSU under W2k and a fix for Commando3.