I was making a smurf account and when I go in game, my mouse acts erratically.

When I go into a game on my new account, my mouse lags out and skips from side to side on my screen. It's not a mouse problem, because it works perfectly on my main account and on the desktop. [sg-ahri-1] Im running MacOS Mojave and i'm using a Logitech G602 mouse.