Hello, I just got a brand new Airport Express 2012 and updated to the latest firmware. I am on the 5GHZ band with auto scan (for channel) enabled. Before, I would use my Macbook Pro 13" to broadcast a wifi network and I always got around 80mbps with an iOS device connected to my MacBook. With my Airport Express, top speeds are 30-40mbps, sometimes in the 20's. Why is this? How can my MacBook be faster than a dedicated router?