Ok Greg,
I updated to the latest SteamVR and Driver4VR, and the problem persists.
My tracking in the visualiser is perfect, and tracking in SteamVR is way off. I recorded two videos doing the same hand movements/gestures each time. As you can see, in SteamVR it just freaks out. If I move my hands out and in, one hand will appear, and the other will take a few seconds. Then one hand might control both controllers.
I had to trim the videos to be able to send them to you, hope you can see enough there.
Also, the controllers seem way too far out. I am using +12 in the video, with +20 they are almost at the edges of the screen.
Hope you can see what I am talking about. One more thing I will try is going back to the old Pimax drivers, to see if they messed it up. Will report back.
Cheers.