A while ago, while grumbling about Thor: Ragnarok, I wrote,
With Marvel films, there’s usually a tricky balance of bombastic drama and quipping, and it’s easy to lose that balance and end up with the humour kicking the legs out from under any dramatic tension… [In Ragnarok,] the humour is for the most part formulaic and repetitive. A character says something cocky or pompous and a deflating pounding or misfire or pratfall ensues. This is repeated later, and then repeated again, and again. This is the joke template of the whole film. And if everything is essentially a set-up for some more rote goofiness, another gag like the one you saw five minutes ago, the stakes and drama ebb away, along with any goodwill, resulting in a film that feels much longer than it actually is.