This is driving me crazy!!!! I have HDMI CEC/ HDMI Control turned off in all places on my TV and on the SHIELD Android TV. Even still, my SHIELD will operate normal in stereo mode until I use Netflix. As soon as I play an episode Netflix switches to 5.1, I will either get no sound or video stuttering. If I manually switch it back to stereo I am good to go... for the episode. Playing the next episode I will have to change this again. After this happens until I reboot the SHIELD attempting to control the volume on ATV yields a message to control my volume externally, system is in surround mode. I currently have my TV outputting to a pair of bookshelf speakers, all settings are stereo on the TV and SHIELD.
Any ideas? I have tried disabling Netflix and uninstalling updates, then enabled and re-updating.
Do you have the latest system update 3.1? This was fixed recently