I've just bought a mi box 3, with android 6. Everything works fine except one thing: the audio in netflix is out of sync. The audio starts to play when the video is still buffering and so the audio is ahead of the video several seconds all the time. This problem only happens with netflix.

Googling I found a possible solution: under the developer options changing HDMI optimization to Best frame rate. This fixed the problem but only for awhile. The next day the problem happened again. The strange thing is that sometimes it works ok, but most times it doesn't.

Did anyone else have this problem? Is there a way to fix it?