Saw it last week. Very disappointed. I’ve done extensive reading on the Manhattan Project and the people who made it happen. The movie tried to assume that Oppenheimer was brilliant without any supporting narrative beyond a short bit about his work on black holes. Total waste of three hours.
Absolutely amazing film. Brian Dennehey played Leslie Groves. It was a well cast movie. Even if you aren't a nuclear physicist it's very easy to follow the technical developments along.