Can one poor performance ruin a movie?

Rating: 5/10 (9 March 2019)

6. That's how many stars out of 10 I give this movie, and honestly I think I'm being very generous. Breaking down the movie into parts, I'd give effects (C.G.I., etc at good 9, maybe 10! The work on de-aging Sam Jackson's character, Nick Fury, was so good, it was almost hard to believe. The other effects, I.e. explosions, particle beams, whatever, all look good too. The overall story I'd give a 7, maybe 8. Decent, but while they included a couple surprises, they weren't that surprising.
The acting? Well, almost all the actors were between good and really good. Only a couple were just o.k. and only one was not very good at all. The problem is, the actor that was the worse, was the lead, Brie Larson. Her performance would have been spot on, had she been playing a cyborg, with no feelings or expressions. Most of her acting was somewhere between a grimace, or smirk. She had those two expressions down pat! Beyond that however, I couldn't tell if she was happy, sad, angry, scared, or just constipated.
A poor performance by the lead is tough for any film to recover from, and this one for me just couldn't.
On a bright note, my popcorn was good!
The above is just my opinion. Your mileage could vary.