5G home internet speed after 15-day trial.

I've had this exact experience today, I had between 170-250mb down and around 70mb up for the first 15 days. On day 16(today) my speed is down to between 30-80mb down and 13-20mb up, this is straight up ridiculous, because I'm surrounded by T-mobile towers, yet when I speedtest it keeps saying that the closest ping locations to me are in another state, which tells me that t-mobile is connecting me to a tower way WAY far away.