This may be irrelevant, but I have noticed that my Ultra HDMI cable does NOT go all the way into the socket. I realized this after trying about 5 different cable brands and inserting/reinserting the cable. It stops at about 3.5 mm or 3/16 inch.
Out of all my devices the Roku is the only one that is not inserting properly. Could that affect the connection quality/handshake?
I'm on my 2nd ULTRA hardware box - and a Samsung KS8000 series 4kTV.
I just got a new 2017 Sony XBR X900E 4k HDR screen. My Roku Ultra is updated to whatever the latest software is as of today, and it is connected to wired 150mb Ethernet. Top of the line HDMI cables, and a Sony STR-DH750 receiver.
I get the purple HDCP error at the start of almost every show, whether it's on Netflix or YouTube or whatever. It only lasts a second, then disappears.
I also get random sound drops. Very quick 1/2 second drops, randomly, about every 5 or 10 minutes. It really sucks, since whenever it happens we usually have to stop and rewind because we miss a word or two being spoken.
Looking for a solution, found this thread, felt like I needed to add my voice.
I take it there's still nothing from Roku about this? Upgraded a 3 to a Premiere+ - the 3 worked just fine with the exact same setup but the plus has continuous audio drops and it's enough to make me throw the plus in the trash and put the 3 back. Very unsatisfied customer.