Well, it seems both the Beta and the LKG branch of the WMR_for_SteamVR works good for me - so far all titles that fialed yesterday work with any of these two, only Wreckfest suffers so dearly form performance loss that playing it inside Virtual Desktop still is impossible. Not all titles have been tested, just those form yesterday, and I acuztally could have pushed the VR settings back to their former higher settings to improve the resolution quality again.
I owe you an marinated caribou, Dowly.