iternabe In the fast one, you seemed to be focused in being fast. In the slow one, you seemed more relaxed. The Faber demo on Youtube sounds too rushed to my liking, too. Not from a playing perspective, I just had the feeling this music needs to be played slower.
So I tapped the original soundtrack: ~108 bpm
Edit: in your last videos, you played really beautiful. You developed a very good sense for musicality. Don't let this be destroyed by the impression you need to play faster just because someone else did.
Another finding: The original soundtrack has a quite relaxed melody line, but the string-section (bass-line) sounds very busy. It is almost as if the strings are playing double tempo than the left hand of the Faber piano arrangement. Or they used a delay effect in the production studio. Maybe this busy mood of the strings made the Faber-Youtube pianist go up so fast.