Movement Bug (Keyboard)

When I load into a match, I can sometimes move normally until what appears to be when I hit sprint (shift), where I then can only move in THE SMALLEST of increments. I'm unsure, but I believe it happens with control, alt, caps lock, and tab as well. I saw a post about overlays, uninstalling and reinstalling, restarting computer, resetting keybinds. None of that fixed the issue. I have not tried playing with controller, as I very much want to play mouse and keyboard. I've been enjoying the game for about 24 hours, but now I'm at a "stand still" due to this problem.