Actually I found his performance rather one-note, to be honest. I don't think that's his fault though. And the film itself is interminably long, pretentious, and self-indulgent. Yet I like certain parts of it. My review is here, if you're interested. Great article, by the way. :)

https://medium.com/simon-dillon-cinema/film-review-beau-is-afraid-6da0edca6c76