Netflix Black Screen on Startup - Amazon Prime on HDR content

Hi all,

I am getting a black screen when Netflix starts and when Amazon Prime plays some HDR content.

Audio for Netflix works for a bit (at least the splash sound and then I can't say); audio for Prime works for few seconds.

Youtube works, but actually never send out rec2020 HDR.

The Bluray APP works fine and send out the proper video stream at 10bit, HDR, rec2020.

My setup: Xbox One X --> AV Receiver Onkyo HT-S5805 (video pass-through) --> Projector Epson EH-TW9400W (6050UB for USA).

Since yesterday I was using the wireless receiver for the projector, but the Xbox could not detect the 4k 60Hz 10 bit configuration from the video menu. Netflix and Prime were working fine, but the Ultra HD HDR content was not detected and showed as normal
SDR 4k in rec 709.

Old setup: Xbox --> AV Receiver --> cable to projector wireless receiver --> Projector

So I connected the AV receiver to the projector with a HDMI cable directly and now the Xbox detects the 4k 60Hz 10 bit configuration and I have all the green tick on the video menu. But Netfilx won't start: black screen. Prime goes in black screen for HDR
content. The receiver jumps from "Resolution Error" to "No signal" ad it looks like the Xbox is trying to switch video conf but is somehow stuck.

Keep in mind that the Bluray APP works fine and send out the proper video stream at 10bit, HDR, rec2020.

And the problem is not the cable because is the same cable I was using to do AV receiver - Wireless Projector receiver.

Plus, I have the same identical setup for the nVidia Shield which is working perfectly fine

Not just that, but the Shield improved with the new setup: now it detects the 10 bit and send out also the rec 2020. When I play Netflix from the Shield I have proper 10 bit, rec 2020 HDR data (I didn't have before).

I checked online some troubleshooting but nothing helped: hard shutdown, electric unplug, uninstall-reinstall.

Any idea?

Thanks

:)