Game switches between 60 and 30 fps

[Jim]

Do you have Adaptive Vsync enabled?

I do not, I turned that off because it was causing screen tearing. (Which IS fixed now. Thanks, Frictional people.)

Another thing about the frames briefly locking at 30, Skullgirls was doing it after I started this thread, and it's never done that before. I now doubt it's an issue with MFP, but if someone knows why this happens, I'd really appreciate your input.

Edited for clarity.