My device is going trough my AVR (Denon x2600h) to my TV (Sony x950)I set the Chromecast to 4k 60hz. It works (4K, Dolby Vision, Dolby Atmos).After power Off, On it's back to 1080 60HZ.If I connect directly to the TV there is no problem.
Unfortunately, Google doesn't support this. Chromecast is designed to be connected directly to the HDMI input of a TV. That's not to say, with some trial and error, you might see some improvement however.
It's a bit strange that a device used to watch movies is not designed to be connected to an AVR.
Nowadays it's getting harder and harder to buy a device that just works.
There must be always some but ...
Thanks for the help, davidking!
DonRemigio, we hear you. I'd suggest you send feedback about this via Google TV. Here's how. Let us know if you still have questions otherwise, we'll be locking this thread after 24 hours.
Google Nest Help Center
Chromecast Help Center