MacBook Air :: 2012 11" Slow On 5Ghz Airport Extreme Wifi Network?Jun 29, 2012
I'm encountering an issue with a new Macbook Air and would grateful for any insights. I have an Airport Extreme (latest model, 5th gen, A1408) based network (all updates applied). I have a new 2012 MacBook Air (11") that I noticed was suffering from VERY slow wifi speeds. After looking into it, I realized that if I used the configuration utility to separately name the 5GHz network and connect to wifi on the 2.4 Ghz network, the speed radically improved.
To illustrate, using speedtest.net, I saw download speeds of 35-38 Mb/s using the 2.4 Ghz network. This drops to 2-3 Mb/s when using the 5 Ghz network. The Macbook Air is showing an RSSI value of -56 when connected via 5 GHz and -51 when connected via 2.4 Ghz.
Other deivces in the home have normal connection speeds on the 5 GHz network, as does a previous generation, 2011 MacBook Air.A friend's also new, 2012 11" MacBook Air exhibits the same symptoms, so the issue is not specific to my unit.
MacBook Air, Mac OS X (10.7.4)