Debug and Validation hangs

I have a larg(er) map that until recently, could be debugged.  Now the validation takes a very, very long time and the debug times out.  I saw a similar article about debug issues and the resolution did not work.  I've created new maps and new solutions and I can't isolate the problem.  I'm now starting to copy/paste each block to a new map in a new solution, which so far is working.  Is there a more practical solution to this?

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