v8.3 wifi slowed or not working
all of a sudden, out of the blue, after about three yrs of working absolutely fine, my wifi network has slowed to a crawl or stopped working altogether. the only thing i can think of that caused the problem is that the iOS update v8.3 happened around the same time things stopped working. the airport utility app and desktop report that everything is "green" and looks fine- so it's obviously not recognizing the problem..
any tips or insight for how to fix this would be greatly appreciated.