OP you definitely have something going odd there, I have a 4930K and a pair of GTX970's, and everything is completely smooth all the time. Even when I had to run on a single GTX970 for the first few weeks after 6.0 launched because SLI was causing the sky to strobe.
You should be getting constant high FPS with your set up. Try disabling your addons and see what happens. And check to see if DSR is enabled as that will kill the FPS.
Depends on what CPU you give it, four cores is recommended these days but more won't hurt.
You should be getting constant high FPS with your set up. Try disabling your addons and see what happens. And check to see if DSR is enabled as that will kill the FPS.
How many cores does WoW actually use?
Depends on what CPU you give it, four cores is recommended these days but more won't hurt.