Many thanks to Tamura Jones for providing information about three Torture Tests that has been preformed to test various software packages.
Please read the details of those tests here:
2010-10-10 Three Torture Test
These results are on the Most Married Torture Test with Family Tree Maker Version 2011
Created by: Tamura Jones 1.2
As noted, the initial response while formatting the GEDCOM file into Family Tree Maker took a few seconds longer than the previous test, but the program did not go to not responding, nor were there any errors observed.
For further details on this stress testing, please review more details on the Data Test tab at the top of this blog. Tamura Jones has more details of his test results and are listed on the Data Test results page.