I can't say, as my 6950 is new to me.
All I can say is eveything is stable for me.
That said, I like many others, have "HORRIBLE" lag on HG-G.
Litterly unplayable...
My belief is is that t3 is cuting dowen it's bandwidth use on their server side.
As a last ditch effort, i will be getting a bigfoot killer 2100 nic.