1633 frames ahead.
some interesting things:
I could do 2-5 room 1 faster by 6 frames, but the next room "mysteriously" adds 6 lag frames back.
You aren't able to puff immediately when you're holding up, you have to release for at least a frame.
It's faster to reset after 2-3 (5f), 2-4 (52f), and 2-5 (46f).