Have you noticed any performance different on the PTRs? I copied my 5 shammys over there wanting to test a bunch of the new stuff and immediately noticed that almost everywhere in northrend I'm sitting at 60 FPS -- including Dalaran. On the live servers, I usually see 30-45 depending on where I am. And for whatever reason, Crystal song I usually only see around 25 FPS, whereas on the PTR I'm at a rock solid 60. For reference, there is usually nobody in Crystal Song or very few people on our live server, so I don't think the server traffic has anything to do with it.

I'm just curious if anyone else on PTR has noticed better frame rates as well?

I'm gonna have to check the WG timer and get into a battle there to check it out. At first, I thought you meant Warsong Gulch as you said WSG, and I couldn't get into any bgs on PTR as the queues never filled.