Do not use WSE2 if your computer/cRPG version (??) somehow doesn't handles it. I got the same shit when I use WSE2, just running cRPG without gives me much better performances about fps.
(with wse, it's around 30, even 10 fps in any melee fight, big or small, without, it's around 70/90 fps). Hope you'll find a wayout about your problem. Also, welcome back!