There seems to have been a 10 month old problem where the download speed on IOS devices was very slow. It seems there is just now a firmware fix so you may want to load the latest firmware. There were plenty of mad people selling Ruckus wireless APs. There was a Lennar builder who was selling them since his clients were complaining. I wonder what he replaced them with?
https://forums.ruckuswireless.com/ruckuswireless/topics/slow-download-speeds-r710-unleashed
https://forums.ruckuswireless.com/ruckuswireless/topics/slow-download-speeds-r710-unleashed