Yeah, player speed will be easier to control if you have it on a set number like maybe 5 or 6. Also, to keep the player from clinging to walls, the most common solution I find and have used is that you can make a Physics Material 2D and set its friction to 0. Once you have that, you can attach it to the player's collider and rigidbody (if it has one) to keep you from sticking to walls. Unsure if you actually need to do both, but I do it anyways just in case.