The difference I noticed right away was in the first 2 seconds the butterfly wasn't on screen to start off with so it doesn't take the extra time to leave and then come back. I think If I just do my exact run but wait for the butterfly to go away before I start it will be a second or two faster. Probably will attempt on my off day if I have time.

Run looks hard to beat and congrats on the sub-4! My computer is dead right now but I'll definitely see what I can do when I get it fixed up.