Are you using any electron based apps? I find them to be much blurrier when using fractional scaling versus Xorg so I'm running my monitors at native rather than my preferred scale of 125% (2K 16" and 4K 27" displays).

IIRC, vs code supported some extra arguments (--enable-features=UseOzonePlatform,WaylandWindowDecorations --ozone-platform=wayland) but this didn't work universally across electron applications and caused very noticeable input lag in others such as Discord.