They know its an issue, I called them on the 27th trying to find a solution and was unsuccessful. I was told to schedule a meeting with my local apple store (an hour drive away AND the soonest time is Oct 2nd).
That said, I may have found a solution for you to try.
I found this in a totally unrelated way. I saw an article about apple's new Wifi booster feature, that will use your network to boost a weak wifi signal. In theory, this is meant to give you the best wifi experience you could hope for, however, it will also chew on your data plan. So i found the button to turn it off under the "cellular" section of settings (its at the very very bottom). After I turned that off, I stopped experiencing freezes.
Maybe something has changed on the back end of apple and I wast not made aware... or maybe I know witchcraft. Either way, this is the only setting I have changed since experiencing the problem, and now I am not. I suggest you give it a try.