Originally Posted by itsraining
Plugged my Roku Ultra into the HDMI-Input, but as I navigate around Netflix looking for a show, I get loud pops and clicks. Anyone encountered this / have a fix?
Yes, I get the same thing when navigating around the Netflix previews coming in from an AppleTV 4K. I've been extensively troubleshooting the problem and had quietly decided that the problem has to do with my 203 being connected to an HDMI 1.3 non-Atmos capable receiver. Your post stating the same problem from a different source now convinces me that I'm on the right track. Some of the preview clips have 2.0 audio and some have "higher" (not sure if some have Atmos). Every preview tries to do a new handshake and negotiate the right audio. My problem gets worse because after a few of these long, noisy handshakes, the ATV4K's video section will "seize" and go into a 2 frame per second hang-up. I determined it was not the CPU because I eventually found that just hitting home menu on the 203 and then back to HDMI input would re-set the smooth video with a new full (audio and video) HDMI handshake.
Questions for you: Is your receiver greater than HDMI 1.3? Is your receiver ATMOS capable?
In all my troubleshooting I isolated it to an audio negotiation problem by setting my ATV4K to force-convert all audio to 5.1. No more slow, noisy re-handshaking while browsing Netflix and also no video freezes. I won't leave it in this setup because I want 7.1 audio when available, but if your Roku has that option and you only want 5.1 maybe it will fix it for you. Maybe an Oppo guru can confirm my suspicion that the Oppo forwards all audio handshakes to the receiver to let the receiver respond to audio handshake requests and that the delay in playing "middleman" is the source of the popping and delays?
If my theory is correct, then I will live with re-negotiating the handshake each time my ATV4K freezes up until I spring for a new HDMI 2.0, Atmos capable receiver.
Other details for the gurus:
- I am waiting for my pre-ordered JVC 4K projector so until then, I am using the main 203 HDMI output for both video and audio to my older HDTV (wondering if the same audio hiccups will happen when I switch to the 203's audio only HDMI output while sending 4K video to the new projector)
- I know audio re-negotiation is happening because I see my receiver cycle through available audio types on the display during the popping.
- I actually was given a replacement ATV4K by Apple when we were first convinced the ATV4K was having a memory or CPU problem. The replacement device has the identical hangup so I eliminated the ATV from the equation.
- All ATV4K HDMI cable tests were perfect up to 4K 60hz 4:4:4.