Just noticed this in my TV 🙈 hasn't noticed it before. Or I knew it was there but thought it runs automatically after a certain number of hours, didn't see that you could do it manually. Is it recommended to run this one? Don't really want to mess with it since I like how it all looks at the moment and don't even know if it will help running from an external device. Anyone done it? Worth doing? Can it be undone if the result is not to my liking?