Fractional scaling finally arrived, I will try it ASAP. Last time I looked in to Xfce there was no way to have a fixed workspace on a secondary display (something that possible in Gnome, for instance). Since I use workspace a lot having a secondary display is kind of useless because it switches workspace at the same time. I since started to use the rather fine Xfce+Awesome combination, but should Xfce get a fixed workspace feature I might go with pure Xfce again.