I just play a game and when I spawn in, It's fine but once I move my mouse the tiniest bit my sensitivity just goes all around, my game freaks the * out, I put the sensivity down in game and my DPI to 1. No idea why it happens and all I have to do is move the mouse a bit and then it just starts to look every where even if I let go.
Have you tried switching to a different USB port? Another thing to try is to re-install the drivers for your mouse, and/or the software that controls your mouse.
Do you have a controller or wheel plugged in? If so, unplug it and reboot the PC and try again, as this has been known to cause issues. Instead of turning off any software, if you use Razor synapse or the like, update it, reboot and try again. Your bf4 folder will not contain mouse info so deleting it, in this case, will not help.
Also, you can try to repair the game, if nothing else works and see if it helps. This is especially true if you have updated to Windows 10 Anniversary edition. You can also try setting your mouse software to not automatically launch when you boot your PC. This seems to also be an issue with the latest update to Windows 10.
Post back if nothing suggested has helped and someone will try to help you.
File profile in C:\Users\[User_name]\Documents\Battlefield 4\ folder contain a lot of mouse info, such as sensitivity, bind of all buttons and mouse X-Y-axis, so you should try to remove it... ))
