Hi
i run the runtime version on my Garuda 
se here the post
Why are there 2 Steam launchers?
Answer
One uses steams own libraries, the other one system native ones. This might result in a performance boost for example if system binaries are newer. However it possibly creates compatibility issues resulting in game crashes. Keep that in mind when using the native launcher. 
I found it here in the Forum .
you also can check if you have Overlay enabled or not to try if it helps . MagDux responded well to it
Did you try other Launcher like Heroic or Lutris?