In this video I'll explore the lobby room system and will introduce some scripts to replace Mirror's OnGUI() version.
Github: https://github.com/Goodgulf281/Unity-Mirror-Helper-Scripts
Download link for the test game: https://www.dropbox.com/s/lcjuoyuf44z7lgt/Mirror.zip?dl=0
Quick note n the download file: it's Windows only and in order to use the shortcut for silent mode you'll need to update the path to where you extracted the zip file.