As soon as I open the game the mouse like moves slowly (normally) then jumps abnormally around my screen the direction I'm moving it. If i lower my dpi to 400, and slowly very, very slowly move it, it'll be okay, but as soon as I pick up speed on my mouse speed, it starts jumping around again. This only occurred in game, and in the menu before the game. If you need to know anything else let me know.
Please help.
I didn't find the right solution from the Internet.