das war der entscheidende Tipp. Danke dafür. Die geänderten Input-Mapper von @Safter hatte ich völlig aus den Augen verloren nach meiner letzten kompletten Neuinstallation.
Some questions for you people who got it working: Is it working in vR loks for you? Are you running paid for window. I am only running the unactivated version of windows home (the one that is downloadable from the Microsoft homepage.