Great! I recently set up desktop Linux, and was disappointed to find poor support for fractional scaling on HiDPI screens, which I’m used to coming from retina MacBook Pro. Gnome under X11 only has 1x, 2x and 3x scaling. In Wayland, Gnome has experimental support for fractional scaling - including 1.75x, the size I’m used to. However, Xwayland apps like Firefox stable (and chrome) render blurry with fractional scalin…
While it's not as conveninent as desktop-wide fractional scaling, note that in particular Firefox has already had HiDPI support via the layout.css.devPixelsPerPx config variable, which you can set through about:config.
I'm currently running KDEv5 and while I got 'most' of the scaling adjusted properly, this setting fixed the size of the tabs, and other annoyances I was experiencing on FireFox.
Thank-you.