I have the graphic settings on low, maybe that's affecting it for you?

I'm not sure when to best end timer. I timed mine with the appearance of a little green Grinch loading symbol in the bottom right corner at end of level. But that doesn't appear to be there on all platforms? I don't see it in your video at least.

A lot of your runs look like they were done with a sped up emulator?

This looks like it was done in a sped up mode?