Could be 10 stars...

Rating: 9/10 (9 December 2019)

But the highly overrated performance of Sam Rockwell ruining every scene he is in.
His rendition of the dumb ass redneck deputy is too comic-like to fit with the sublime and superb acting of the rest of the cast. You can even see him smirking through his role as he seems to find himself so great. Surely not worth an Oscar. (But then everybody knows the Oscars are a shady business anyways.)
Frances McDormand though is stunning and her Oscar is definitely well deserved.