VPN issues

I have had the T-Mobile Home Internet Service for about 2 months now and have been fighting non-stop with the VPN issues. I use Cisco AnyConnect for my work and constantly have issues with applications needed for work, mostly Microsoft Teams. When NOT connected to the VPN my download is about 75mbps and upload about 25mbps, all very good numbers. However, once connected to Cisco AnyConnect those numbers come down to almost a crashing halt of 2.5mbps down and 2.0mbps up… it is absolutely awful and quite honestly embarrassing because I have to be on Microsoft Teams all day including conferences.

I've talked to the tech support and it was elevated to a second tier, but that resulted in no solution. Their belief is that the VPN was the problem and that I needed to speak with my employer's IT department about it… so I did. I opened up various tickets through my employer and went in to the office so they could do additional diagnosing. They could not find anything wrong, in fact, had me log in to the VPN via their network and it worked just fine. 

I have starlink service on order and hope to have it here in a month. Ideally for the cost and what I anticipated being great performance by T-Mobile, I would prefer to keep T-Mobile. However, I simply CANNOT wait much longer especially if the company appears to be denying even an issue.

Hope T-Mobile comes to the rescue.