Some interesting performance tweaks that have been posted on the ESO subreddit:
http://www.reddit.com/r/elderscrolls...rmance_tweaks/
I'm not sure about running the exe they suggest. I haven't had a chance to play with it yet in my VM sandbox to see if its safe.
RequestedNumWorkerThreads 0 has helped on my laptop. I'd get a stutter every 30s or so and now I dont. Never had that problem on my desktop.