The most efficient I have ever seen this place 4 tellers were working and only 1 customer in line. I was helped by a gentlemen who usually greets people, and it appeared being a teller is below him as he did not say hello or goodbye or even attempt communication during the duration of the transaction.
I walked in today and it was up to its usual poor efficiency, long line to the door and 1 teller working. While other "greeters" milled around. I left and came back an hour later, as this is a convenient location to my place of business. There was still a line to the door. I hope these weren't the same people when I left.