If you stop an app and return to the Home menu, the app is not really stopped. The app is still running in the background to be readily available when you start it again. To run fluently, most apps need to save some data in the cache memory of the TV. It might be good to stop an app completely or clear the cache data of a particular app to optimise the overall performance of apps and to keep memory usage low on your TV. Also, it is best to uninstall apps that you are not using anymore. You can go to [Dashboard] — [All settings] — [Apps] — [See all apps] or [Unused apps] to list your installed or used apps.

For each installed app, you can also set the permissions for Manage updates, App permissions, Special app access and Security.

Find more information on www.support.google.com/googletv