Choppy FPS on a Gaming Desktop

Lert: I am not convinced gnomefathers is the issue. My rig is nowhere near as powerful as OP's but I run the game at ~30 fps stable at near max settings with gnomefathers as well as XVM installed. Especially since OP says he has had this issue since the past few days.   @OP: Make sure all your drivers are up to date, make sure your Direct X is up to date, make sure you aren't infected by any viruses or trojans, close all unnecessary programs (especially any web browser running at the time) and try again.   If your WoT is still choppy, check your CPU and GPU usage while the game is running, see where the problem actually lies.