NAT/forwarding issues while gaming/streaming

You posted that tmobile fixed the problem for you, presumably by updates from their end.

Not that a reverse proxy approach solved it (as in third party tools).

You were asked for firmware details, port details, a means to confirm end to end unsolicited inbound port forwarding was actually working properly (as can be tested with the likes of Shieldsup or speedguide.net).

https://www.grc.com/shieldsup

https://www.speedguide.net/scan.php

THAT is likely why people kept pinging you.

I already had my extensive back and forth over the issues with both parties.  Realized they were not willing to move away from their XLAT464 anytime soon (which is stated by design specifically to break this functionality).  I ran the numbers and decided it wasn't worth the extra headaches and costs, even though there was a viable solution available through my personal router, and managed to set up a better deal with an ISP that does it properly.

Hey, I have the exact same issue as you. I’ve called and talked to tech support multiple times including a manager. I’ve gotten them to this exact thread so they could see that you called and talked to someone who fixed the issue. They continuously read their policy on how they can’t change anything in their end. They said the software engineer you talked to was Xbox itself. I don’t believe that. Can you help me out by telling me exactly how you explained the problem to them? Or what solution you were told? Just want to play my games man.