Hi all, seeking your advice!
I connected a new Denon AV receiver with 2 HDMI outs to:
A TV (full HD - no 4K)
A 4K-60Hz beamer through a 4K -60HZ capable HDMI extender. (to another room)
and this gave HDCP issues: the receiver did frequent drop-outs.
(I used brand new HDMI 2.1 cables to...