I think you had my exact thought process throughout the video. Processed the beginning footage like "Okay I 100% see where this is going, needs a lot of TLC, then it got to the small snippet of Pokémon and I immediately saw SO MUCH POTENTIAL.
Sorry to revive an old thread but out of curiosity, @Soler37, did you ever figure out your issue? Not saying that I am facing this issue. Just curious.
I believe it has something to do with using unlimited stamina when opening the doors at the beginning. It stops a cutscene from happening that gives you the ability to fast travel.