Hi Joe,
Done some testing, router in clear line of sight.
Connection speed is now 780-866,7 mbps.
Did the same test and file transfer to the Nas is now 43 Mb/sec, now this is ac speed.
Also changed the uAPSD setting but it doesn't make any real difference.
Asus dit not tell me if the 7260ac is validated for the N750Jk but the laptop is available with 2 wireless cards, Qualcomm and the intel 7260n card.
So if the 7260n is valid, i suppose the 7260ac also is?
So very strange only one wall can make this kind of speed difference, never had this problem with my other not AC speed adapter.