Anyone think it's a little silly that most of the reviews here so far seem to mainly consist of "Gee whiz do I hate movies filmed in first person pov, so gee whiz was I shocked to find that I was upset that I also didn't like this movie that was filmed in first person pov!"? If you have an irrational hatred of anything in first person, don't watch this. Problem solved.
That aside, it's a perfectly solid sci-fi action movie. The core concept is clever, though at it's heart it's just a flashy action movie. Don't expect this to be a thought-provoker like The Arrival, but it's not down there in the complete brain dead zone like a Michael Bay movie either. It's somewhere in between, with a decent plot, above average special effects, and the always enjoyable, though perhaps a little underutilized, Dan Stevens.
It's not going to make any top 10 lists or win any major awards, but it succeeds at being entertaining without requiring that you shut down your brain entirely to enjoy it.