> What about GTK apps? They’ll reap the same benefit once GTK also gains fractional scaling support and implements the protocol. Until then, GTK apps will continue to use the less efficient upscale+downscale method for fractional scale factors.

Except GTK developers do not intend on ever implementing proper fractional scaling.

https://gitlab.gnome.org/GNOME/gtk/-/issues/4345#note_134462...

(also a nice demonstration of the typical attitude of GNOME/GTK developers, for those looking for drama or that still aren't aware of it)