From another forum
For people who don't know why there was lag.
The stream started with using the DotATV in game streaming set up.
Once the stream broke 1 million viewers the game started to bug out so they had to split it off over to ownedtv set up on another side computer (why we lost the shoutcasters).
They forgot to split the China stream and that broke 1 mill on it's own so it made another huge lag spike.
By the end of the game there was over 2.8 million viewers of the main stream and it was making issues for the person spectating.