What is the Favourites tab in Settings and how do I add settings to it?

Favourites is the first tab in Settings, and you fill it yourself: tap the star next to any setting on any tab and it appears in Favourites.

It's a shortcut, not a copy — the setting stays on its own tab too, and changing it in either place is the same change.

Worth adding the ones you adjust often: sensitivity, gyroscope, graphics quality, volume, visualization of sound effects.