I had to turn some of the 2.4 back on, because some people couldn't get wireless. We have too many mixed devices out there. I turned the 2.4 back on in every other room, and I also set up a load group with band steering. I also changed the 5Ghz radio to 20 mhz wide, since its a dense environment. One teacher can mirror from her macbook, but not her iPad. I don't think there is much else I can do.