How to Connect to a Consumer VPN on T-Mobile Home Internet (5G Nokia Gateway)

Called T-Mo Home ISP help line and got great phone and tech response to this Moz VPN mismatch, within a couple of hours the tech sending in two firmware updates, the first of which made a dramatic improvement changing from around 3Mbps or less which was unstable and spotty, to an average around 12.5Mbps with my Moz VPN on, thus greatly improved to generally in a range between 9 to 15Mbps, very  usable for very near 100% of my VPN business and browsing purposes. The VPN Ipv6 setting still makes no difference. T-Mo is clearly pushing the envelope on service performance to get these connection use issues resolved for every different type VPN. Had a short period Sat morning when I first turned it on around 8am when speed fell to 1 and 2Mbs, not really usable at all on most websites, which could be due to a morning tower traffic issue (as has been mentioned in related posts elsewhere), or just as easily be some sort of insignificant, one-off anomaly. It'll take several more mornings to be certain. I'll keep checking for any sort of recurrent time-of-day issues, but I can live with this Moz VPN running speed, in the 9 to 15Mbps range, as long as it doesn't often fall off to unusable at regular times.  The total speed available at +90 is great still there, which is way more than my 2 computers and several tv's will ever need.  I've seen it sometimes as high as 150 to 200Mbps which, since less than 5Mbps is required for even the densest videos data streams, means I still have excellent reception at all of my 5 tv's on Roku all over the house with plenty of unused bandwidth available, with a rock solid 3 out of 5 bars signal reception showing on the T-Mo grey tube screen wifi router located on my ground floor.