I received and installed mine yesterday. The first step that is missing in the instructions is to plug in and start charging the battery pack (even if it shows multiple lights).
PCIe install went fine into small slot.
The app kept showing the HMD but would then say unable to connect. This continued until I physically unplugged the HDMI cable of the old linkbox from the video card and disabled bluetooth updates to the base stations in Steam VR. I then rebooted.
I was able to get the HMD to connect with 4 bars, so I started Steam VR and then started playing the Lab. As long as I was standing perfectly still everything worked fine and wirelessly. Quick head movements cause pixelization until I stop moving. This is the first time I ever got motion sick playing VR. In the middle of a game the HMD went black so I stopped playing. T he battery showed as empty so I set it to recharge and came back to it a few hours later.
When I came back and plugged the charged battery in everything started up fine (app, then Steam VR, then Beat Saber). In game I didn't notice the pixelization as much and the game was totally playable via wireless EXCEPT that when I ducked or move around a wall I would periodically have the HMD go totally black. It would come back on after a few seconds. I tried jiggling the USB power cable between the battery and HMD and finally got to a point where it quit blacking out regularly. Two or three times after it went black the HMD would come back on but only be working on one eye (the right). The left eye would remain off, so I would unplug the USB cable and restart the app, steam VR, and the game.
I noticed in the last crash that my Steam VR app was showing a ton of dropped frames despite the fact that I was standing 3 feet away in direct line of the antennae.
I'm running a GTX 970, not sure if it just can't handle it but I don't think that would affect dropped frames would it?
Hope some of this helps somone else.