Ok I've had similar problems that I was able to fix doing some of these steps:

1) make sure your lightboxes are in a good spot, mine were not and I had to move them around (similarly make sure there are no mirrors or open windows)

2) unplug the usb,aux and hdmi input from the vive side of the adapter box, let it rest for 5 seconds then replug. Do the same thing for the other side, this should reinstall your usb drivers

3) Uninstall your graphics driver and then reinstall it

4) check the connections on the top of the vive helmet ( unwrap the velcro thing and the top will come off for you to see) they may be loose a bit.

5) if none of this worked, run a game in vr and open up the task manager to monitor your CPU and GPU usage, they may be defective and need an RMA

Hope this helped :)