Hello, chris212.
It's always great to hear back on whether the solution posted was helpful or not. Thank you for writing. I did some extra testing myself and came to realization that your "testa" demonstration takes a very long time under Cygwin (~ 40x longer) versus running under Strawberry Perl. On the contrary, the two MCE solutions completed in the same time frame for Cygwin and Strawberry Perl.
Kind regards, Mario.
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