I start the game, go to the world map and select a level. So far no problems. Then the level starts, and shovel knight just seems to move really sluggishly, like in slow motion or something. NPCs and enemies seem to move at their regular speed, but I'm not 100% sure on that. When I talk to people the text definitely moves at the same speed.

I had been playing this game over a month with no problems, and then one day for seemingly no reason, this happens. I thought it might be a problem with my controller, but the same thing happened when playing it with the keyboard.

Any help would be appreciated