I have two Sony HDR 4k TV's one is connected to 2017 Roku Ultra and the other to Streaming Stick+, both are working fine when configured as follows: ⋅ Connect Roku to HDMI port #2 and enable enhanced HDMI, HDMI 3 is normally reserved for ARC and HDMI 1 & 4 will not handle 4k 60Hz &sdo...

I set up my new Roku Streaming Stick+ (https://www.roku.com/en-gb/products/streaming-stick-plus) a few days ago, on setup it auto-detected my display and ticked all the checkboxes - 4k 60Hz supported etc. I tested it and the screen went black momentarily followed by showing a mess of green graphics ...