Average time through customs?

Usually 15-20

I flew out at 8AM something, so I was there by 2 hours ahead of time. And I was through security and at my gate in around 10 min.

They tell you to be at the airport 2 hours before your flight doesn't mean it will take that long but just in case depends where you are going or coming from

It depends on what you have to claim and the line.