I'm on windows 10 and also had the piss poor fps issue.
I tried nearly all versions of dgVoodoo which fixed games like AA2, none worked correctly.
I dug around and finally found working files (from 20 max fps to my 120fps cap).
It was on this YT video
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Second link inside that video, uploader says it has issues on School Mate 2, but it seems to work fine on Musumakeup (no floating face textures, no floating faceless heads with teeth, etc).
It's only weirdly messing up my fps counter (mirrored and turned it upside down).