Why it didn't feel real

So when I first watched this I was struck by how the concept seemed good, but when watching it still felt incredibly unnatural and even, at time, slightly nauseating. There's this really weird thing that the brain does when interpreting vision. It's called saccadic masking. You can google it, but the long and the short of it is that the brain edits out blurred things from rapid eye movement. Look at something then look to the side at something else. Did you see all of the blur? Probably not. You brain hid that from you. (It's a rabbit hole of weirdness that includes explanations for things like looking at a clock and at first it seeming like the second hand or digits froze for too long.)

So my point is that, if you want to truly do a first person POV for a film like this, you need to do what the brain does. You need to edit out bits and make eye movement jump instead of be a continuous movement. I would imagine that could be done as a mix of software and human editing, but I would love for someone to tinker with this and see if they can create a more natural feeling first person visual narrative.