Lucas Alber

Yes. Xournal++ for example works fine.

>X11 doesn't support mixed refresh rate whatsoever - a display (spanning all monitors) has a single refresh rate. I retested with this in mind, and Xournal++ is indeed running at...

Yes, I am absolutely sure it runs at 60 fps (just retested): ``` >>> sublime.log_fps(True) fps: 61 average: 0ms fps: 61 average: 1ms fps: 61 average: 1ms fps: 61 average:...

Sure. They are the same, see the attached screenshots. The 60Hz monitor is `Monitor 0` maybe that's relevant? [screenshots.zip](https://github.com/sublimehq/sublime_text/files/10555124/screenshots.zip)

> Shot in the dark: do you have more than one window open? Of Sublime Text instances? No, only a single instance. (more instances don't seem to change anything)

I just realized I did not test without HW acceleration and ST restart, so I tested some more: - Started ST with 2 Monitors and HW acceleration on ⇾ stable...

Is there a way to test that?

Just tested with `gtk3-demo` and `gtk4-demo` (using the OpenGL Area) and the GTK4 demo runs indeed way smoother than the GTK3 demo. (So I am guessing GTK3 runs at 60...

This might be due to the tty shell setting up your environment. Compare the environment variables maybe you find a theme setting in one and not the other?

You start Hyprland and use the printenv command on the terminal (once for tty and once for gdm).