I noticed our throughput isn't what I would expect on our wireless devices. We have a guest network as well as a corporate network and both of my test cases only yield about a 20-30 Mbps.
With my corporate device I believe this is about the best I could expect, however I know my iPhone can do more. If I connect a laptop to our wired guest network I can achieve a greater throughput so I'm sure this is on my wireless side.
Controller: Virtual on 10 GB backbone.
Connected AP: 3935i
Device Wireless: Centrino N
Device: iPhone 7