Try a Remote Play rehearsal before GTA VI launch night
Rockstar says GTA VI supports Remote Play on PlayStation and Xbox. You can test your setup before release with a game you already own. Use the same device, controller and room you expect to use on launch night.
Make the first test about getting connected. Then drive or turn the camera quickly to see how the connection feels in motion. If it stutters, compare a spot closer to the router before changing any settings.