While there's nothing particularly deep here, there are some strong and very measured performances. It did make me think about things as I was watching it and it certainly wasn't predictable. The conclusion was also reasonably satisfying.
Rebecca Hall was very believable as Claire. I also particularly liked the performance of Amr Waked as Omar.
Without giving any spoilers, I think it is possible to say this is "about" people who are suffering (hearing the "hum" that most cannot) and trying to find someone who can help them. It strikes me it is also "about" the way the brain can construct both helpful and unhelpful explanations.
Well worth a watch, so long as you're not looking for anything deep and meaningful. (I enjoyed this enough to binge watch it last night.)