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Mixed Reality capture bad overlap

Image target in Unity and in print are in millimeter precision and in 3d they overlap almost perfectly. But when I record the experience, the overlay is about 2cm narrower than the print (50cm wide) and looks really wrong. It seems that the left edge aligns well, but the right and bottom edges are off.

In the recording I would see the overlay shrink within 2 seconds once the recording started. I assumed since both use camera stream, that is the reason, but then I tried to get the location of the target with Vuforia, then detach the object from image target, and then turn off tracking by disabling ARCamera before starting the recording - still the same issue.

I have also tried to UnityEngine.VR.WSA.HolographicSettings.SetFocusPointForFrame and placing it at the center of the quad that overlays the ImageTarget, but no improvement.

Am I missing something?

You can see it here.

https://youtu.be/A5Nryjd4RoU?t=46s

The overlay looked perfect from my viewpoint

I did use meters all along, so something else is wrong. A did calibrating for sensors and ipd a few times, and also did a factory reset. I will test more when I get some free time.