MarcoRivera1999’s review published on Letterboxd:
Probably the weakest from Chris Nolan for me, i just didn't really care for this movie.
The action was good, especially the fight scenes at the airport. The music was another highlight but i felt it was a bit overused at times. The performances from everyone were pretty solid but nothing super special.
Like people say, the sound mixing is genuinely awful, i've seen movies with much smaller budgets have better audio than Tenet. Besides that the dialogue is clunky as usual from Nolan, half of it is dull exposition while the other half is mediocre and often corny lines of dialogue.
Overall it was alright but i'll probably never watch it again, torn between a 5 or a 6 but i'm gonna be generous for now.