Zoltrix Conflicting w/ Music Quest (& CPU too slow for 4

[MusicallyInspired]

I've mentinoed before but it's really starting to bug me now. I can't seem to have both my Music Quest and Zoltrix (sb pro) working at the same time except for Sierra games. Apogee and Interplay games are the worst for it. I can get adlib sounds fine along with digital sound but I can't get anything to go out of my Music Quest. I'm guessing it's because it's conflicting with the Zoltrix's game/midi port. The obvious thing to do would be to change the port for one of the cards, but I can't figure out how to do that to either of them in DOS. Any suggestions?

Also, my 486 is running pathetically slow. Like, it's almost rediculous. I don't know if I'm just used to pentiums but I don't remember our old 486 being this slow and my 386 laptop runs faster than this. would I maybe need to format or something (haven't done that yet)?

I also am in need of more memory. I've tried memmaker but it slows down the computer and nothing works well with it. Is there any other options?