XPS 15 9570, 4K screen, banding

I've recently got my new XPS 15 with 4K screen and right out of the box it was heating, so some Googling showed that it is a known problem which was addressed in last BIOS version. Updated BIOS. Heating problem solved. However, I have horrible banding on pics and videos. All gradients look like blotchy striped nightmare. I have got laptop for photo and video editing and have no idea how to use it for that. There was a solution to switch off "Color Accuracy" under Intel Graphic Card but seems that option is not available anymore, simply can not find and a lot of people in the community claim the same. Any ideas how to make my screen show some decent color quality?