Controls Seem to Lag Horrendously Bad

My player seems to continuously glitch animations, causing the controls to be super bugged and almost makes the game unplayable. For example, when i try to crouch scaffolding, my character seems to spam crouch, making me unable to get down. It also occurs when I start to run. After a few seconds, the movements will glitch and start to spam crouch, run, and walk at the same time.