Poor sound editing or wonky accents?

I can't be the only one who was struggling to understand what people were saying at times? Don't get me wrong it was only sporadically, but it happened several times in the film from different people.

You had a lot of different accents on show so that could be it but still I struggled to make out what Mia was saying with her English accented speech. That shouldn't really be happening.

I think the sound mixing was botched.