Terrific. Thanks for the kind words.

I'm glad you suggested the solution because I'm not sure it would have occurred to me. I learned something from this.

If you don't mind me asking -- I'm trying to learn everything I can from this -- were you doing anything to set affinity when the problem was happening? Or were the WoWs just running with their default affinities?

Also, do you have hyperthreading enabled? (Does TaskManager show two CPUs or four?)