I just picked up a Mi Box and am watching 4k YouTube videos on my TV at 4k 60hrz and see a lot of dropped frames. It appears as lag and is noticeable when watching someone talk and their lips don't match the audio. Anyone else have this issue or thoughts on the problem? I'm thinking I may return it and get the shield or wait for the shield version 2.
Enable stats for nerds in the YouTube app on mi box and you will see that it's not 4k 60, mi box currently doesn't support 4k 60 on youtube