Here is what a Dell LED monitor shows
all I did is go to the start of the race, switch to photo mode, and moved the camera:
went through all Dell monitor settings and no change to the bands. Tried Limited RGB as well as Full and no change to the discrete bands of color.
Here is what a screen capture (although uploaded to imgur) shows, of exactly the same frame.
The same bands are there in the screen capture!
here is that JPG edited, just turn the exposure slider way up and save as new file:
so now this is what I see on the monitor and TV.
the sky colours are much darker in the native JPG capture much darker than how the image is on the monitor or TV, so the banding is almost invisible to the eye
but they are all there. And when the LED monitor or TV displays the HDMI signal, they are much more visible.
I don't know what is intended by the game, the colours from the JPG capture, or the colours as interpreted by the display device which highlight the bands?