Spikes in speed at 60FPS

[icejiub]

Turn on Vsync.

I'm not even kidding. I'll get what appears to be stuttering while the game continues to run at 60 fps, while it flips back and forth between smooth and unsmooth.

It doesn't even make sense in the realm of most pc games, but I guess it works when you're trying to keep an emulated game in sync with itself.