Since 3.0, which destroyed my FPS in WZs, literally nothing changed in regards to the aforementioned issue.
Back then I played on a desktop (i7-2600k, 8 GB, GTX 580 3 GB, HDD). Now I have an Alienware 18 with i7-4930mx (4.2 GHz), 32 GB, 780m 4GB x2 SLI and SSDs, fps is the same. If i try to enable my SLI, i get less than 10 frames in WZs. Without it and with some tweaks I get a ~25 - 40 fps in WZs during fights...