First off, very interesting application! I hope it will get option to easily change sample rate a latency/quantum so that meta commands through terminal is not needed.
The issue I noticed is that the graphs are only updated smoothly when I move my mouse cursor. I am using the Flatpak version under GNOME 45 (Wayland) and I have made a short video demonstrating the issue.
https://www.youtube.com/watch?v=onk9GPrMPpg