@steven.ellsworth40, does toggling the killswitch on/off/on have the same effect as restarting? You could try the unfree driver, but I’d rather first try 2.4Ghz, as hinted early in this thread.
@tregeagle rest assured, the ISP had nothing to do with it, not even the actual router. It can only be the hot-spot itself, which of course is often part of the router. But you could have kept the ISP/router, disabled the WiFi in it, and attached a stand-alone hot-spot (assuming of course, that this hot-spot does not produce the same problem). Not suggesting to do that, just pointing out the technical context.