My theory around this is that the device isn't fully secured and therefore widewine detects that and lowers the resolution. Clearly an indication of something not as it should be...
I really tried a few times more with Asus technical support but they were told from "higher up the chain" that it wasn't up to them to solve and it was Netflix responsibility... I gave up after that totally useless experience...
I run into this too on the ZF9 w A13 and based on earlier experience with Asus technical support I decided to stop this expensive "beta" test... maybe they will fix it in timely manner.
Ok, Asus technical support forwarded me to Netflix support and they looked at the issue but couldn't explain nor fix it. They said something about new Android versions could take a while for the app to synch with but since I started from scratch with...
Same here on 33.0804.2060.113 (not rooted of course) and issue with Netflix returns even after re-installation of phone and App. Asus support case started too. Also have issues with playing Prime video HD. Disappointed