jumpy controls

[Gaster_]

Hey, love the concept of breaking the 4th wall with that game.
I'm currently in the doomsweeper level and I'm getting insane, the controls in 3d are a pain in the ass on my end, always jittery and jumping in different directions when moving around, mame me fall to my death more than once and don't get me started with aiming at enemies...
not to mention that the minesweeper logic is kinda broken, I can easily solve complex puzzles but somehow I fail at those (quite simple) ones generated. 2 in the middle, so no mines except the 2 already found, right? nope, apparently there's a 3rd one, instantly killing my session.
Any idea on how to fix this?