Random single pixels going full white for fraction of a second. It was incredibly obvious during the openings of Planet Earth II and Blue Planet II, where there’s a full black field with the BBC’s purple intro text. Then obvious again during the planet and sun sequence at the start of an episode. The best I can describe it as is snow or a sparkle or a shimmer. The quick pop of white draws the eye. My wife, who often says I’m way too picky about AV stuff, found it pretty distracting. I tried a half dozen discs and could see it on everything. Blus of the Martian, LEGO Batman, Zero Dark. 4K Blus of Planet Earth, Black Panther, Logan.Hmmmmmm. I wonder if this is what I’ve been seeing. Can you elaborate on this a bit or give /show examples?