Sounds like the movie committed the sins of a lot of movies that are about people traveling to different worlds. The real world segments are never the most interesting segments to the audience. If you're the Matrix people want to see the characters in The Matrix, if your Inception people want to see the characters in dreams. If your Tomorrowland people want to see more Tomorrowland. If you are Wizard of Oz people want to see Oz.
You can't just half-ass the real world segments either though. They have to be compelling enough to keep the whole movie together.
From what I can ascertain gamers are saying that the real-world segments were the most boring part of the game and it sounds like the film didn't do a good enough job of investing people in those parts of the film and didn't give them enough of they came for.