I watched this the other night. It's not great. I think I'm prepared to give it a re-watch (for reasons below) but at the same time I don't find myself hurrying to do so.
Though I understand the time inversion concept, the three main sequences that rely on it are confusing. The first one - in the Freeport - at least benefits from being revisited later on from the opposite perspective, though it's still quite a confusing mess given it's basically two blokes fighting in a corridor. Then you have the warehouse in Estonia which starts off very poorly, even though you're seeing both sides of the action at once through a pane of glass it's still hard to follow. It's possible my brain was numb following the most exquisitely tedious heist scene in movie history. And finally, the final battle. Even with colour-coded troops it's hard to follow.
I'd like to see all these scenes again to see if I can make better sense of them now I know the overall structure of the narrative that's being followed in them. Though in fact what I really need is someone to edit all the scenes together in a linear or even split-screen fashion and stick them on YouTube (chances are if someone hasn't done that already they will soon).
It's six and two threes, you know? You shouldn't HAVE to need to watch a film several times to make sense of it. But then I also like a film that rewards rewatching and lets you discover new things; to my mind, Inception does this: I understand what's going on, but I like further puzzling out its complexity. And I can watch The Prestige again and again.
MrsMoth: What are you watching?
Me: Tenet
MrsMoth: Would I like it?
Me: Probably not. It's by him what did Inception.
MrsMoth: Oh, watching that, I didn't know whether I was coming or going!
Me: Well... in this film, they do both!
Thinking about it some more, I've enjoyed many other of Nolan's films to some degree, and would like to see them again. The thing is though - I never bother. Memento, Dunkirk, Interstellar - I'd like to see them again. I just can't be arsed. And maybe that's the problem.