The device is "seen". The box just does not know what it is or what to do with it using that image.
root@vuduo4k:~# lsusb
Bus 001 Device 003: ID 1a40:0101
Bus 001 Device 002: ID 1a40:0101
Bus 001 Device 001: ID 1d6b:0002
Bus 002 Device 001: ID 1d6b:0003
Bus 001 Device 006: ID 734c:5925
Bus 001 Device 007: ID 13fe:1f00
Bus 001 Device 008: ID 0a5c:0bdc
Bus 001 Device 004: ID 0a5c:2045
root@vuduo4k:~#
Europe and Germany are mainly using the Duo 4K as a subscription box, so the pixelation may not exist on their channels. Also, Why should OpenATV care about this if others do not have the problem? OpenATV is a German forum mostly. Still, I am sure ATV would like to fix it but How? You have provided them with nothing to work with.

For the pixelation issue, it would be very helpful to see it, or at least know what it takes for it to exist. Some drivers may be moved between images. It just depends. On the other hand, If the pixelation is drivers, then the other images should also get updated drivers at some point.