Structure tool window causing AppCode code editing to be slow

Hi,

Is anyone else experiencing this?  I found a reference in a previous post about turning off Scope view, but I'm not sure if that is the same thing.

Here's what I'm trying to do...on the left side of AppCode, I have the project tool window.  On the very right side of the IDE, I have the structure tool window.  Then I have two code panes in between.  As I'm typing in my header files to add new variables, the editor becomes unreponsive for seconds at a time.  This impacts the speed at which I can type dramatically.  This especially true when I start typing a type such as NSString *, then I backspace because I made a mistake.

If I hide the structure view, this symptom goes away.