Rebuilding does not fix this problem.

This has been plaguing us for about a decade.

This specific problem has cost Intuit much more in Sales than it would have spent in IT fixing it, they're just too stupid to get it.  I've told many prospective buyers to never consider Intuit specifically because of this single unacceptable painful wasteful "Adding or Editing Rules Stalls or Freezes" problem.  Why should we be spitting and cussing at our accounting software?  Because of one reason:  Intuit doesn't give a crap about the users of its software.  Once a sale is made, it's "Screw you".