I have an NVIDIA 970, i7 6700K, 8GB ram etc.
All my other games are running fine at frame rates you would expect from a fairly high end gaming rig (well high-end 18 months ago...)
I jus started playing WOW again. I am using the HD version. I am getting 15 FPS @ 2560 x 1440. I get 20 FPS at 1920x1080. Lowering the settings helps a little - about 4-5 FPS each time I drop down a level. I played around with not having the tracking camera view on, etc - made very little difference. The game is actually playable but obviously not smooth. I double checked the frame rate using Action as I didn't actually believe it at first. I seem to recall getting WAY higher frame rates when I was playing ~ 1 yr ago.
Drivers are up to date as of Nov 19 update from NVIDIA.
Any help greatly appreciated.