There's a dll you need to replace. I can't remember exactly which. Did you do that?
It runs fine on my PC. I don't have to lower the quality. AMD HD7950 GPU.
Replace the vpinmame.dll in the Visual PinMame folder, and reinstall pinmame.
Get the proper ROMs for the tables. The table download page on unit3dpinball.net
tells you which ROMs.
Or read the User Docs -> First Steps.
It's an alpha and this is it's second release. It might not have support yet, but if not then no doubt it will eventually. What harm is there in trying it?