Subtitles, audio tracks, and versions
Subtitles and audio: while something is playing, look for the speech-bubble icon (subtitles) and the audio-track icon. Many files include multiple languages and subtitle options — pick what you want, and the app remembers your preference per show.
Multiple versions: some movies exist in the library in both 4K and regular HD. If a 4K movie stutters on your connection or device, check whether the play button offers a version choice and pick the 1080p one — same movie, smaller stream.
Skip credits / next episode: series auto-advance to the next episode like you'd expect.