Why can't I get a higher refresh rate on wayland as I did on Xorg?

I did try a google search but all of them seem to be too old or just no longer exist after an update.

I can set the display at 120hz in Xorg but only 60hz in Wayland.

tried xrandr ?

You know your stuff and you obviously know Xrandr won’t work for Wayland.

But for the OP as far as I know gnome Wayland doesn’t support refresh rates higher than 60. If you use sway window manager, you can set your refresh rate higher.

Ahh yes. Xrandr doesn’t work with wayland.

Try setting refresh rate with Weston:

Specifically, you need mode=widthxheight@refresh_rate

Some example configs: