>I found a discussion of HDCP and the issues it can cause: https://www.howtogeek.com/208917/htg-explains-how-hdcp-breaks-your-hdtv-and-how-to-fix-it/

Yes, good point, when I took a look more into that, I found those points in regards to HDCP. When I looked at the article in reference of your message, I was mostly interested into that section: "...the only way to deal with your HDCP compliance problem is to buy a cheap HDMI splitter that ignores HDCP requests."

It appears most of the issues are caused by that support. Thus, getting rid of it seems to be something to consider.

Thanks