I've been trying to speedrun this game and one thing I noticed is that the blocks and enemies seem to fall way faster in these runs than in the version of the game I'm playing. I tested this with the little bats on level 3 onward and (most visibly) with the star animation at the end of every level, and these animations take up to a second more to complete in my version of the game than in the runs in this board.

Is there some trick, code, hidden setting or something that speeds up the game that I don't know? Cause it's not like it's one run, the top three runs all look way faster that when I play it.

check out the guide i posted

I did, I don't have a desktop pc and the browser version is just as slow...