@mcc @lovegame I don't know how or why this works, but I reinstalled Fedora with the "cinnamon spin" (it might work by just installing cinnamon, but I can't say it will because I have not tried that on regular Fedora or any other distro) and running cinnamon on X allows for correct fractional DPI scaling with no blurring. The only quirk so far is QT5 programs need their cursor scale to be explicitly set in an environment variable.