Sublime is extremely slow

What I mean is when I type text, it is very slow to appear and it appears in bursts.  Same thing with erasing and scrolling.  Kind of like network lag in video games.  This is on a fresh install on Ubuntu 12.04 with no plugins.  The system is fast otherwise with a fast cpu and 16 gigs of ram.  

After I erase all the settings reverting to "fresh install", it is fast for about two minutes on a normal text file and then becomes very slow again.