I am getting the same problem. Did you manage to fix it and if so how did you do it. I have been given a link which takes me through what seems quite a complicated process but am going to print it out and give it a go. But saw your problem was the same as mine so thought I would ask you if you managed to clear this problem with anything simple ?
Sniper Elite 4 review: Headshotting Nazis has never felt so good