what size is you monitor ? 4K resolution only looks good if the panel is between 43 inches and 58 inches. Anything lower or higher than that, everything will look tiny and unreadable. My 4K monitor is 28 inches and icons and texts looks tiny. I don't like using DPI scale more than 100% because Windows looks horrible with DPI scale enabled... and applications looks horrible as well, because most of them they are not DPI scale compatible.