I don't have an M1 myself. I've had two reports of 3-5 second video lag with my Vuo-made application, when running on M1 Macs. Given the performance of these machines, I can only guess something else is going on.
If I'm running a composition in a window, ie VuoCompositionLoader is running, and then I sleep my Mac, when I wake my Mac the main Vuo app has forgotten about the window, and so there's no convenient way to kill the window except for quitting VuoCompositionLoader.
Expected behaviour would be that the Stop button in the main Vuo app would still be visible, and hitting that would close/stop the current app in the VuoCompositionLoader.