At this point I've nailed down what I am unhappy in with regard tracking : the headset part of tracking that requires the LEDs and the camera.
I notice that out of a VR program with the screen hanging before you, there are no LEDs lit on the front of the headset. Yet the screen is stabilised for rotation by the gyros. This works pretty flawlessly. But there is no translation mapped, so moving back and forward in space or left and right the screen stays nailed at the same distance. But all the rotation is translated perfectly. All good so far.
The problem comes with the LEDs on, the info from the camera seems to fight with the accelerometers and I get sliding and flicking back into position. It isn't noticeable at all on distant scenery but it is noticeable with stereo vision to close things such as the UFO catcher machine in the playroom, and the railing in batman VR where you pick the different acts. Or looking down at the ground just ahead of you in batman. Even motionless it randomly decides to start moving my POV a little, then pop-locks back to where it should be. Add in head motion and sometimes there is a worse lurch in the world view that doesn't feel too good.
Now I can pin down exactly where to look to see if its stable or not, I'll have to try various things like reboot the PS4, camera position, re-calibration etc.
But while I muck around with different experiments half of me wonders whether perhaps everyones headset gets this, perhaps they just don't care or they don't look at nearby objects enough (I don't notice anything amiss in Rez or Thumper for example)? Does anyone have a nailed down headset for depth and linear translation in space, both while still and with various kinds of moves?