I've had no issues with Win10 on my old 1080p laptop. I also have a new Dell XPS 15 w/4k touch display; unless you absolutely need it, I recommend NOT getting a laptop with a 4k display. If software doesn't fully support UHD resolutions, Windows 10 attempts to scale things and seriously messes up interfaces. Other than that, I've had no issues. Even some software, specifically Adobe Acrobat, still hasn't sorted out their scaling issues.