I use this on Windows 10: http://windows10_dpi_blurry_fix.xpexplorer.com/ and it works fine. If you have blurry text, disable DPI scaling in that app (right-click -> Properties -> Compatibility -> Disable DPI scaling) and this will take over and make it usable. There are a couple of applications that act wrong no matter what (Battle.net for example), but most of the time this fixes it well enough.