Maybe someone here has insight that could help me.

I have a Shield TV connected to an Sony 65" x900e. The TV is connected to a Sony STR-DN840 receiver. I have to connect everything to the TV since the receiver doesn't support HDCP 2.2.

When using the Shield TV the audio is often out of sync with the video. Watching purchased movies/TV on Google Play is most noticeable. Also watching a show on hulu or netflix seems to get further off on each episode. I have tried adjusting the sync setting on the Shield TV/TV/Receiver without much luck. Can't find the right combination. I could solve this by getting a new receiver that is HDCP 2.2 compliant, but that is only a last resort.

Any suggestions? The Shield TV streams 4K content much smoother than the TV especially Amazon Prime (lots of buffering) so I prefer to use it.