Why does ID Safe export take so much longer now?

I have NIS 21.1.0.18 installed on a Win8.1 x64 notebook.  I've noticed recently that exporting the ID Safe is taking about twice as long as it did before.  Problem is I don't know if it's an NIS issue, Win 8.1 issue, or both.  I upgraded to the latest NIS version on 10/16 and to Win8.1 on 10/18.  It used to take about 3 mins to do the export.  Now it takes about 5-6 mins.  Is any one else seeing this?