If you have a normal sized attention span it isn’t boring. The script is terrific. The dialogue is superb. The tension of the last act of the film is awesome.
It’s got nothing to do with attention span and everything to do with repetitiveness. When every single scene of a movie reminds you of stuff you’ve seen not just in one previous movie but MANY said movie gets boring. And really I find it sad you’re going after the personal attack, you’re better than that.