Despite daily rolling restarts, and even some restarts in the evenings, various servers continue to be somewhat unstable. And by unstable I mean instances crashing of be extremely laggy, or realms crashing unexpectedly. I was just on my Death Knight doing Argent Tournement dailies and Kargath crashed. And it had a rolling restart earlier this morning. Instability–to one extent or another–is nothing new with patches. Especially major patches like 3.1, but it doesn’t erase the frustration one feels while you wait for Blizzard to optimize things.