After getting no good results from toggling off every event, i started to look at your layout and objects. The main problem is that you have sprites that are gigantic, mainly your ground sprite (sprite2), one of them is 12718 pixels wide. After removing a lot of them and resizing some i managed to get the game running smoothly again.
There's a few things you can do to fix this, instead of using a sprite object, use the TiledBackground object, its much faster when your going to be resizing things that much. If that fails or you insist on using sprites, split the huge ones into lots of smaller ones.
I also recommend aligning all your objects with the grid because they are kinda messy right now, but its your game