The film's title is appropriate, since that is the feeling you are getting from the movie. Somehow, something is wrong with it, but you can't put your finger on it. The twist at the end was pretty predictable as well, but somehow they botched it up with the very last scenes. If they change the ending - not in its idea, but its handling - the movie gains an instant extra rating point.
However the biggest harm that anything can do to this film is that it was released soon after Ex Machina when they are approaching similar subjects. It is not the same thing, but close enough, and clearly not as good. I have to think, would I have liked the film in 2014, let's say? And the answer is probably yes. Change the ending scenes, make the pace a little more alert, maybe remove some of the slow scenes or some of the bad ones (because there are some that are just stupid) and you get an instant winner.
Bottom line: interesting concept, not bad yet mediocre implementation, badly written ending scenes. Uncannily close to a good movie.
P.S. Why do movies try to seem smart with chess analogies, and then really botch them completely? Even the weakest chess player in the world would instantly see that the people doing the scenes had no idea how the game is played.