... after watching it passively as a conventional movie.

But it worked well for me, as I got caught in :

-- an overwhelming mess of extrapolations : is there a fundamental big brother PACing everything ? Is this big brother a big organization, corporation (netflix) or government ? Or is it the MC himself, endlessly reprogramming his real/virtual life ? If so, is he willingly trapped inside his own maze ? Are the other characters embodying other real players, with their own background and goals, of which we see very little ? Or is the MC just completely delusional ? Does it even matter if indeed each situation branches off as several parallel realities ? Ultimately I'm even happier I didn't get any unequivocal answer by the end of the movie, the way Existenz did and Matrix did not back in the days.

-- the fairly realistic dive into madness of the MC given his constant circumstances. I'm not sure it would've gone so "smoothly" if I had decided for him