Americans seem to not like this
I am an American myself, and I really enjoyed this movie. But I noticed the average user rating by US users is 4.7, while the rest of the world gives it an 8.8. That is a pretty huge difference.
I'm wondering why this is. Do most Americans just not get the humor? Another possibility is the dialogue seems to go very fast, so perhaps it's hard for English-speakers to catch everything. I know it was a struggle for me to read all the subtitles in time.