I was able to set different scales for laptop screen and monitor after enabling Wayland and these settings stay the same.
To do that you need to:
- set
WaylandEnable=true
in/etc/gdm3/custom.conf
- reboot
- at the log in screen, there is a small gear wheel on the bottom right side, choose “Pop on Wayland” instead of “Pop”
I think some people have issues with Nvidia cards, but I don’t have one and haven’t had any issues.