First Person Controller movement Lag?

I put a gun on my character with a arm etc, it lets mew look around! but when ever i try move it just freezes? its so annoying! i have all my movement speeds up and when i move the unity program will like lag, like what the f**k? Someone Help please?

Your character controller is running into your arm. It may not be the final solution, but to start with, turn off the colliders on the arm and gun and any other child game objects of the Character Controller.