Normally I can run all 5 of my shamans around Dalaran without much of a problem. It takes a few minutes to have them all load up of course, but once there I get pretty good fps.

Last night was my first venture into WG. I could barely move around much less participate in the action. Once the event ended and I went outside the fortress I could move with no issues.

Are others seeing this? If this is going to be the norm, then I'm not sure I will ever be able to go there with more than 2 maybe 3 tops.