I have a laptop with hidpi (14" 2560x1440) and I gave up : I now use a non-native lower resolution.
I tried x11, I tried wayland, I tried scaling, I tried fractional scaling, I tried changing default font size.
I always ended up with text too small, text too blurry or inconsistencies between applications.
I tried x11, I tried wayland, I tried scaling, I tried fractional scaling, I tried changing default font size. I always ended up with text too small, text too blurry or inconsistencies between applications.