Hello there. Today i had to discover, that my new AirPort Extreme wich runs normally with ac 1300mbit, after i put my rmbp in sleep and wake it up again changes in 802.11n 2,4ghz mode. After manually reconnecting it goes back to ac speed. What the hell is wrong with it?? How come noone else seems complaining about that? If thats a Bug why Nobody seem to care? It makes ac-Speeds on this device practically useless. Did Apple screw the software up on this device too? Anyone can confirm this? Or do i miss sth? Someone with the exact same problem: https://discussions.apple.com/thread/6094712?tstart=0 Thanks !!!