Because Scratch is designed with limits, the amount of clones needed actually breaks the engine down a bit. That might be why. another reason is that the gravity is somewhat floaty and it only feels more that way because I increased the max speed in the x direction so you can move extremely far while falling somewhat slowly, making the game feel laggy. I made it faster because I thought the platforming itself was easy if you went slowly, so I shifted from a more geometry dash style game to something more similar to flappy bird