Horrible reliability on LTE

<p> I've purchased the uncapped LTE service with the hope that I'll be able to stream. The service is great during the day I get up to 45 megabytes per second , but the moment the clock strikes 7 o'clock The speed falls to below 1 Mbps. I phoned customer service complaining about this but nobody came back to me. It is really frustrating to have Internet but can't use it. </p>