Tank driving bug? (PC)

Since release of the game I am having an issue with driving heavy ground vehicles. Everytime I jump into a tank, it crawls on it's own at some sort of idle speed and I can't turn left, right or move backwards.  Aiming and shooting works perfectly, but i can't control them with WASD. Already tried changing the keybindings, changed my keyboard and even re-installed the game twice. The funny part is, that after re-installing BF6, the tank controls worked for about 1 or 2 matches, before I had the issue again.
Driving other ground vehicles such as quads or 4wheelers works perfectly fine.

Anyone else having this problem? I already searched on all kind of support pages for a solution, withput any success.

I want to finally drive tanks :(

Thank you so much for your help!