I can confirm this happens with Titans Of Space and the 4Th Floor demo. it also happens on all my VR DK2 published demos that work on my other machine, similar build but instead of 2xGTX980 it has 2x GTX680.
This current machine previously had 3x GTX780 Ti's and I had no problems with it.
DK1 demos run fine. Also mono demos created with the latest Unity work fine.
I N F I N I T E