A smooth 60 indoors, and 40-50 in a few places outside or in big battles. I was careful in my selection of textures, and handpicked a 'performance' ENB that looked great at night and was also functional beyond screenshots. The only real issue is the limited amount of scripts the game can handle, meaning I couldn't have too many combat/gameplay modifiers running at once. FPS drops I can handle, but not the game stuttering and freezing on its own accord.
I have a gtx 970 (haha 3.5 gb screw you nvidia) and a i7 4790k in case you're wondering, a better setup than most people, but not exactly the beefiest thing in the world