Is SublimeCodeIntel working well again/yet? I tried it a few months ago on Mac and it caused major slowdowns all throughout ST2 - even just typing text was slow when it's installed. I've heard other such reports on the forums, and a co-developer had the same problem last week.
I use it daily and have no issues on my machine with slowdowns or any trouble. SublimeCodeIntel + SublimeLinter + autocomplete are what made me switch to ST2 a couple months ago. Haven't touched TextMate or emacs since.
I had the same problem, until I took the recommendation of using the nightly version a couple weeks ago. Now it works great.
http://www.sublimetext.com/dev
