I have the same problem. My hearing is also excellent. I have worked out what the problem is, though. The truth is, nobody can hear everything in a place like that. But other people can fill in gaps in speech, possibly from other signals like watching the face, but I think mainly from a conversation model in their brain. For some reason I either lack the model, or it's just not trained properly (more likely tbh), so I have to hear everything to understand.