When I start the game, the camera always turns to look down and does not follow the mouse.
It is possible to tilt the view upwards using the mouse, but as soon as the mouse stops moving the
view titlts back to the floor again.

The whole time steps can be heard, therefore I think the game is misintepreting something as player
input. Besides mouse and keyboard I had a joystick connected, but disconnecting it does not
improve the situation.

I currently don't have any ideas, but maybe someone else has encountered and solved this proble before?