Vuforia version: vuforia-unity-6-2-10.
Testing devices: ASUS_X014D, ASUS_ZE551ML.
Rating of used marker: 5 stars.
For testing, we have used a sample video playback, taken from the official site, with our marker.
The video display does not correspond to the edges of the target image, the video is not stable. On other phones, the video becomes smooth and there are no such problems the same conditions.
A video recording of the discrepancy of the display and the materials used (the target image and video) is attached.