Are Tmobile internet for business prioritized on the network? HIGH LATENCY!!!

I just installed Tmobile internet and have been having issues with through-put and high latency.  Speeds when low latency, which is only between midnight and 5am PST in Everett WA, allows for up to 175mbps down, but during the business hours and high latency we are getting 2-8mbps download.  Unacceptable for a business internet solution.  Are these devices prioritized on the network to ensure some or ANY type of service level?