Like many Mac owners, WoW performance took a dive with this last patch. After checking out the WoW forums I'm pleased to report my performance has returned -- or perhaps improved -- from prior versions. A few things: 1. There is apparently a bug in the patch and the Mac client that disables some optimizations. No word on specifically what setups this affects. It could be affecting you, it may not be. A Mac hotfix is in the works for release "in the next week or two." (Source: WoW forums) 2. Full Screen Glow Effect, by default, is turned on with this new patch. Not only does this make the game look worse (IMO) but there's a huge performance hit, especially if you have AA turned on. 3. Built-in AA/AF support. This was the big one for me. With my ATI X800 I've been using the ATI control panel. I've since turned off my WoW customization via the control panel and turned on WoW's internal AA/AF support. This has greatly improved performance. Find your config.wtf folder. Open it with your text editor. Add the following line to turn on AA: SET gxMultisample "2" <-- You can also try 4 or 8, or 0 for off SET gxMultisampleQuality "1.000000" <-- AF setting. On my machine (specs below), with most everything turned on high (terrain distance to medium) at 1680 x 1050 I'm averaging about 40 fps, dropping to 20-30 in Ironforge. Very happy to have a beautiful and smooth WoW playing experience again!