Apple TV subtitles OFF or AUTO
I watch a lot of foreign shows and I want to hear the language spoken in its native tongue, and I also want subtitles in english. I just learned to make sure that under AUDIO the language I want to HEAR the show is checked. Then I go to subtitles and make sure english is checked. But this does not always work. IN Apple TV Setting I go to Audio/Video and go down to ssubtitles and I am offered 2 choices there-Auto or Off. In addition to languages. Which setting do I use? Auto or Off? What do they do and how do they work? I have gotten conflicting answers fro Apple Support. So I am asking the Community for help. Thanks
Apple TV 4K, tvOS 15