I run Windows 10 on a laptop with a 4K resolution screen, specifically acquired for photo editing. As someone else said, everything seems to "just work", none of the annoying problems I've had with previous versions of Windows. And 4K resolution on a colour accurate screen is just really lovely! In fact the only "problem" I've had with such a high resolution screen is that I'm a determined pixel peeper. When checking out sharpening artefacts, lens detail resolution, noise removal, etc., I like to be able to see the individual pixels. All I used to have to do was look closely at the screen and I could see not only the pixels but the individual coloured dots with which the screen made up a pixel. Now I can't see the coloured dots, and it takes a ridiculous amount of zooming in before I can see the individual pixels.