I updated my firmware to 5.10.04 on my 77C9 and now whenever I play Dolby Vision content on Netflix or HBO Max on my Nvidia Shield (2019) it is cycling between black screen and the image showing with the Dolby vision logo from the tv staying on. Connected through Denon x7200WA and was working fine for 17 months without an issue until their crappy software. As soon as they fix this I disconnect the TV from Internet as I only use it as a monitor.