I've been having a mouse tracking issue recently in CSGO, when not moving my character in game the crosshairs ever so slightly to the left. This only occurs in game and not in any other process on my pc. Any help is much appreciated!
Do you have a gamepad attached to your computer? If an analog stick weren't centered completely it could potentially cause an issue like that. I would say it could be a mouse issue, but if you haven't noticed it outside that game that probably wouldn't be the case.