[wrxtasy]

You mean display/projector info? If so, that’s irrelevant or won’t reveal anything about the banding issue. The signal/resolution is fine.

Banding occurs always with 4K and HDR movies; it’s just more pronounced/visible in scenes with skies... like within the first few minutes of ‘The Martian’ before the storm sequence, or the first few minutes of ‘The Revenant’ with DiCaprio’s wife and kid.

You also get color banding issues when bit depths are not tunneled thru from the source video via HDMI to the display properly.
An example is the AMLogic S905X / S905D devices that do 10bit > 8bit < 10bit transformations via Linux Kernel dithering and rounding.

If done properly like on the S905X Vero 4K you do not get major color banding issues.

So the question is - does the underlying Linux Kernel in the Zidoo's provide a proper 10bit tunnel or does it currently use buggy dithering and rounding to output color ?