Edit: I got answers on the Fedora forum and used this command in my parallels VM and restarted: sudo grubby --update-kernel=ALL --args=video=Virtual-1:3456x2234@120.

I’m trying to get a custom resolution & refresh rate in KDE Wayland. I can get 120hz working on X11 by getting a modeline with cvt 4112 2572 120 and using xrandr commands, but how about Wayland? Perhaps be done with kscreen-doctor?