Simplest explanation is HDR enables more color bits per pixel so you have much higher contrast in bright and dark images. It’s pretty much essential if you are using OLED panels as these can turn off pixels for a realistic/not washed out black.

I did the same on my media center mini PC. Any idea how to check/enable HDR?

Sure beats IT work.

Never been there but I miss it too.

Even us in America. This is a joke of a car made by a joke of a person.