Hm, I have to look into this (HDPI, >>fractional scaling<<) again. - Last time I looked into it, there was no Wayland protocol for clients being able to handle

Hm, I have to look into this (HDPI, >>fractional scaling<<) again. - Last time I looked into it, there was no Wayland protocol for clients being able to handle the scaling themself (if they want to) and as such do it "properly" (e.g. for font rendering). Through I think now there is, I think Gnome supports it, KDE and Sway might but I'm not sure either way. - This still needs to be supported by the client, which it should be for modern Qt,GTK applications. - If not supported by the client it will render at a non-fractional scaling and then scale the image. - Here the quality can change depending on the algorithm used (e.g. downscaling vs. upscaling and if downscaling how much "bigger" the image is rendered before downscaling and what algorithm is used there). Last time I checked (very long ago) the algorithm sway used on my laptop (could be GPU dependent) was bad, like really bad, but this was also very long ago. So there is a high chance this improved. Given that I'm going to setup a new HDPI laptop soon, I guess I have to check this points again soon ;) As a side note: Non-fractional scaling works perfectly fine on at least sway since years.