[palym]

Thanks for your replies.

At the Moment the AVR is connected via HDMI and the TV via USB-C-HDMI. I can set 4k resolution in Kodi as well as 60 FPS. Passthrough is working, too. However, I have some image interferences every each and while. I saw this when I changed the HDMI ports at the NUC, too. It seems to me that video and audio are always a little bit out of sync.

3D hardware accelaration is not working in this setup, too. But I learned that this is a known issue for HDMI 2.0. When I pass the video through my AVR it works most of the time.

My TV has an option called Ultra Deep HD Color. If I enable it I see a strange behavior. The TV resolution is set to 4k all the time and the TV does only receive image data when another monitor (behind my AVR is on), i.e. the TV is on standby as soon as I have no other non Ultra Deep HD Color device connected.

The next strange thing is that the Ultra HD Blueray Advisor by Cyberlink tells me that I dont have SGX (it is enabled in Bios and Intel SGX AESM is started), that I don't have Intel ME software (which is installed, too) and that my display is not HDCP 2.2. :-(