Im not so sure what we are talking about when it comes to throttling and you would need to have a ATT to hook up to your router to know if it is throttling or congestion. Congestion slows everyone up. With that said, being you are tethering using your router? I dont know what the Red Pocket terms of use are with tethering and not a concern of mine ...
Also for clarification purposes When I say they "do not throttle" down your speed I am saying in my area on my CELL Phone I get full network speeds of around 25 to 50 Mbps also the VERY few times I had to tether during a Spectrum outage... (I haven't checked in a while) With ATT owned Cricket their terms of service clearly state you will get 8Mbps ( I have not had Cricket in years)... more or less by using Redpocket you are not subscribed to a plan that right out of the gate is limited to a lower data rate then some of the other secondary services do and most do limit, all I am saying is Redpocket has not for my ATT service, maybe that would have been a better way to say it because ATT, Verizon and TMobile all throttle when their networks are congested, or maybe better said, are congested so your data slows down.
What I am saying, when networks are not congested I get full ATT speeds as you do and I suspect the slow downs in your area also affect regular ATT subscribers in the same way as you.
Im in no way promoting Redpocket. I just like facts, there is so much misinformation out there... for example, this is something most people never bother to look at, took me five minutes to find it buried on Verizons Home page, I meant to look for ATT but somehow ended up at Verizon which people think is the holy grail anyway...