Matthew Bowers’s review published on Letterboxd :
A visually stunning but deeply, deeply flawed film. Feels like an awkward first draft that could be something great, if it went through a lot of refinement. I don't know about the science (and don't much care, it's science-FICTION, people), but the PLOT doesn't hang together particularly well, the themes are half-baked, and the character development is almost non-existent. There are good performances, and I in particular bought the relationship that's at the heart of the film, but it's not enough to salvage this wreck.
The effects and visuals ARE stunning, though, and Nolan still knows how to mount an exciting and visceral sequence (or sequence of sequences). If you're going to see it, see it in IMAX (TRUE IMAX, if at all possible); otherwise, don't bother.