Xbox Live party chat and MTU problem

[Dubs]

Hi, i have been using Three 5g for a week now and while i am very pleased with my DL speeds, i cannot join people in xbox live party chat. The xbox says i have an mtu problem. I have tried port forwarding, putting my xbox in the dmz and turning off the firewall but nothing works.

[Darren5688]

I’ve had this problem for 6 months. Basically you was sold a lie like many other people. You simply can’t use three broadband for gaming.