Just tried that out and it worked, thanks for the tip. Weird that I see banding in the Program Monitor and when I use the export frame button, pretty frustrating.
Man Premiere really is garbage. Just exported a frame from Davinci and Premiere at the same time. Bit depth maxed out on Premiere.
Full 4K exports here shows the banding even better.
So like some people here, the deal breaker for me is 4K60P Full Frame. I commented on Atomos' IG and they responded with this. I guess uncropped 4K60P is happening through HDMI?