This is very very odd, I bought worms reloaded a couple of days ago and I have a very gamebreaking issue.. Basically when I'm about to shoot something and get that up and down aiming crosshair my up and down arrows are completely laggy. I mean.. If I hold my up arrow the aim will go up maybe 5-10 degrees then stop and I have to press the button again. I have the exact same issue with the jetpack and the rope, I can barely fly with the jetpack because of this.

note that I can walk with my worms perfectly fine without any lags and I have tried rebinding my keys but it's the same issue. It's not my keyboard since it works perfectly fine in any other game...

Anyone know anything about this ;S?

EDIT: I have now realised that it's only the up & down movements I have issues with. Even if I change the keybindings to anything else, it will still remain the same.