It's a web build issue, it should be running solid 60 fps locally and it's nice and fast then!
Thanks for the feedback! I think I might explore this down the line as next project with a bit more plot too :D
I played the desktop version too but I think there was lag was on my computer (too many things open including other jam games).
I hope you do continue it. I get from the game description that the story is somewhat arbitrary but some of the best game franchises are. I mean, someone could take random elements like a plumber, turtles, mushrooms and a flower that makes you shoot fireballs and mash them together and I bet it would work.