Hi, here my feedback
i have a rock64 4Gb version mounted on a LG TV 4k ( 49UH770v) and a AVR Yamaha rx-v475.
i have problems with the green lines if a configure the TV in 4k 60hz, when i changed the refresh rate to 30 hz, the green lines dissapear, but the UI loss the smoth....
another problem is witth the audio passthought, at the start of the film, the sound is noise indefined, when i change the audio channel to another, the problem disapear, i must back to my sound chanel and enjoy the film !
HDR works fine !!!!
Thx for the job !! and sorry for my english.......