Wintergrasp lag a big issue after patch 3.1

Zarhym has got some answers to the widespread problem of lag in Wintergrasp after patch 3.1 the other week. He says Blizzard figures the problem is simply population based -- there are many more people playing in the battleground than there were before the patch. For that reason, they're having trouble coming up with good solutions: the battleground is designed to be non-instanced, and that's why