Welcome to the Rogers Community Forums and thanks for your first post! 🙂
Utilizing the 5G network is usually the best option! Is the phone or tablet that you have the Google Home app installed on also connected to the 5G network? If so, have you tried to clear your app cache for the Google Home app and Uninstall/Reinstall it?
Also, have you tried any of the troubleshooting steps that Andy mentioned above?