Is anyone else experiencing this? When the app is first launched (after a reboot) the audio is fine, but as soon as you rewind or fast forward the audio becomes horribly unsynced. The only solution is to reboot the device, but then you can't rewind or fast forward at all.
This only happens with Prime Video, and only started happening like a month ago. I've had the Mibox for almost a year with no issues. I also have a Shield, which is where I get the most up-to-date Prime Video apks and sideload them into the Mibox.
You may want to check out this old thread:
https://www.reddit.com/r/AndroidTV/comments/bisx88/problem_with_prime_video_on_xiaomi_mi_box_s/