Easy to get working but my speed is 65 on my Oct 2013 iMac upstairs whereas on my daughters 2013 MBP in the same room its 156. Both say they are on 2.4GHz. Its seems a waste of time having an ac wifi if my house/walls won't allow the 5Ghz range to be chosen. But the difference in performance between the iMac and MBP is surprising and disappointing. I probably get the same from my Sky router Anyone any ideas or tips please ?