I can't play Pokemon Snap

[Blaze Dragon]

I honestly don't get what's wrong. In my previous computer (which was quite a bit worse than this one), I had absolutely no problem playing it. Now? Can't play it at all.

I've tried both 1.6 and 2.0/2.1, both with entirely different problems. In 1.6, by selecting the whole save to buffer thing so the pictures show, the game runs ridiculously slow (while working just fine without it, but being unplayable because the pics don't show). In 2.X, it goes ridiculously fast, even with the speed limiter. In fact, it hits over 500 VIs (whatever those are) without it, and runs around 100 with it.

I can do with some help, so, please?