***PUBLIC SERVICE ANNOUNCEMENT***
HDR seems to not be working right on both the XBox1(X) and PS4 (pro). I'm on the Xbox1X and noticed the colors were washed out, there is a light haze and images are not sharp. Turning off HDR in the console settings makes a huge difference, like night and day.
See here:
I've experienced the same on my Samsung series 9 4K LED.
R* has been made aware and hopefully fixes this in the next update and soon.