I had this at one point & hard drive died. If your screen is flipped use reshade to flip it to correct orientation, I had that issue. Links are dead though, just like my hard drive.
Worked for me on HTC Vive. Friend played it on his CV1 and didn't have issue. TY again for the recent VR releases, hope to see more. It could possibly be a calibrating issue? As if it tracked sitting upside down on desk while you loaded?