@[email protected]@[email protected] A suggestion maybe, but users who have hybrid gpu setup like me intel/amd to have option to open an application or .desktop shortcut in dedicated gpu like in GNOME. I tried it using cli everything works just missing a GUI option like in Gnome. And to make the application always open in dedicated gpu, a change in PrefersNonDefaultGPU=true in .Desktop file is all that needed. I hope that helps you guys or anyone looking for a solution to a similar setup like this.
Maybe this doesn't exactly answer your question, but I launch all my games through Lutris, and have it set to always use dedicated GPU when launching a game.