That is what xrandr allows you to do on X11, create and set display modes that aren't reported by the monitor.
EDID editing is basically replacing the data reported by the monitor, which also allows you to add display modes it doesn't report itself. This is the only way to do what you are looking for on wayland.
You can either switch to X11, and use xrandr, or create an EDID file with the display mode you want, and have it load on boot. Doing that is unfortunately not simple.
The joke is that the games are bad, and the communities too toxic, to be a healthy hobby.
Thereby, a person being prevented from playing is being blessed, not because there is no longer a backdoor into their system. But because they will no longer have to endure the verbal abuse of temmates and opponents.
I recently switched to Kopia for my offsite backup solution.
It's apparently one of the faster options, and it can be set up so that the files of the differential backups are handled by a repository server on the offsite end, so file management doesn't need to happen over the network at a snails pace.
The result is a way to maintain frequent full backups of my nextcloud instance, with almost no downtime.
Nextcloud only goes into maintenance mode for the duration of a postgres database dump, after which the actual file system backup occurs using a temporary btrfs snapshot, containing a frozen filesystem at the time of the database dump.
You might give Bottles a go. It can be used to run GW2 the same way steam does, but you'll have access to tweak all the different settings of the compatibility layer.
You can also use ProtonUPQT to install custom versions of proton, then set steam to use them from game properties.
That is what xrandr allows you to do on X11, create and set display modes that aren't reported by the monitor.
EDID editing is basically replacing the data reported by the monitor, which also allows you to add display modes it doesn't report itself. This is the only way to do what you are looking for on wayland.
You can either switch to X11, and use xrandr, or create an EDID file with the display mode you want, and have it load on boot. Doing that is unfortunately not simple.