I have had a tough time getting my 4k ext display to properly scale with i3. I tried arandr but the fonts are too small. With scaling , Emacs, Firefox and alacritty seem to be ok but things seem sluggish on my x230. How did you do it ?
I'm on a pretty big monitor (~40 inches) for development, so I don't actually do any scaling for this display. I'm spoiled with a pretty good desktop rig, so I haven't had to do any optimization in a while.
