Wireless AC on RT-AC68U

Hi,

Great firmware!! I'm using it on my RT-N16 as well as RT-AC68U and they are both rock solid. Just a question, does the build for RT-AC68U have wireless AC support or no? The wireless network mode for 5GHz only shows "A" or "N" so I choose Auto. On my laptop, which has wireless AC, I am only able to get 400mbps max. Am I missing something?

Thanks again for this awesome firmware.
