When chats are enabled-Frequent Dc's-Disable all chats,-Runs perfect zero dc's?

[Braap]

A person on one of our low pop vanilla servers is having an issue. Not 1 of about 200+ people asked have any idea of a possible solution. He can play with the voice chat on, (push to talk that is), and the normal text chat on- and frequently DC (Every 10 mins or less).

If he turns off the chats , he can play for hours on end with zero issue ever.

Any ideas?

Thanks guys!