Audio loses sync when refresh rate/resolution auto changes when player is plugged into receiver.

Zidoo Z9x Pro
Sony X90j
Onkyo Tx-NR7100

Doesn't lose sync when player is plugged into tv and audio is sent to receiver through earc. When everything is setup this way, my tv down mixes pcm audio to stereo 16bit 48khz. Not ideal when you have some files that have 5.1 hi res flac audio. So, I'd rather plug my player into the receiver and fix the sync issue.