Just wanted to report that I am having the same issue with an Anthem MRX1120 receiver and Nvidia Shield 2019. Dolby vision has been working flawlessly since purchasing the avr and shield last year and since the 5.10.04 firmware update it now glitches to a black screen every few seconds on Netflix. It's unwatchable, the only fix is to disable Dolby Vision at the source.
The timing varies with other content (seems related to refresh rate, but it seems to do so with any Dolby Vision source.
Audio is unaffected.
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