I didn't quite notice when this stopped but i am certain that i saw an option for for 5.1 and 2 channel sound on Netflix on my Android TV. I don't get that anymore.
Nothing else in my setup has changed. Has anybody else noticed this? Do you know what the fix for this is?
###Solution
I was using optical out with the PCM setting. Optical can put out only 2 channel uncompressed audio.
Changing setting to Auto 2 got me the 5.1 settings back.
Thanks to /u/updawg and /u/mildlyconfuzzled !
I think it's just automatic now.. I definitely am getting 5.1 in my living room.