Built in and updated vizio tv app on new 2021 tv menu is super laggy and starts freezing and buffering if u pause or back out show to watch something else. Only rebooting tv helps. Rebooting app does not. Now on my phone app played fine till last update now it will now work, app loads and asks for sign in info and when u hit ok app closes and crashes and ask if I want to report it. Uninstall and reinstall and still same outcome.