Default scope? How to exclude frameworks?

I'm trying to solve this problem:  AppCode indexes frameworks I've included in my project.  This makes it very, very slow.  Any time I try to use find functions, it's very, very laggy.

I've defined a scope which excludes my frameworks.  However, AppCode doesn't seem to use it.

How do I set up AppCode to only index specific scopes by default?

Thanks!