Fractional scaling is still experimental and CPU consuming in Wayland. I didn't even investigate further as that is a must have feature for me.

I can only offer anecdotal evidence, but here it goes. Used to have plenty of issues with scaling under Wayland, particular with my nvidia gpu. Now I am running an intel-only machine (yes I would prefer AMD) with a scaling factor of 1.5, and it runs very well. It's a very efficient machine, too, using only around 6W at idle, sometimes dipping below 5W.

When talking Wayland, there are no generalities because there is no program called "Wayland" -- can you specify which compositor you used? GNOME, KDE, or a wlroots-based one?

What is a good wlroots based compositor (non tiling)?