Does the constant console clearing make this unwatchable for anyone else? I get 2 fps, one of which is the white console and the other is the next printed frame.

To me it worked fine, I started with the 1000ms one first to avoid crashing chrome but then i lowered it and it worked fine. Pretty impressive! really nice!

Ah, they do mention "possibly Windows-only", and I'm on Linux.

Does the same on Windows (7) for me though.

Yep, it did this for me at all ref rates and a couple of different machines.

I was close to getting a seizure. (On a mac using Canary)

Demo fails if you unselect music.

Take me back to 1988. https://www.youtube.com/watch?v=QkznItCgnJ4

init(60) works fairly well for me, MBP 13" - I do have a crapload of tabs open however.