improved use of MovingMinMaxAvg<> for better performance

* tweaked options of MovingMinMaxAvg<> to have better performance with same results
* added timing results for the network vs stats collection so we can see if stats collection is really bogging down system
If I'm going to be pedantic I might as well not stint.

StDev not only violates Coding Standard section 1.1.8: Abbreviations and acronyms must be uppercase when used in a name or lowercase when used at the beginning of a variable.

(which I disagree with... I see no usefulness in capitalizing abbreviations... STDDev? <-- just wrong.) 

... but also Coding Stardard section 1.2.12: Abbreviations in names should be avoided.

I guess it should probably be called: StandardDeviation.  I'd make an issue for it but it is just too easy.  I'd do it myself right now but wouldn't want to do it while anyone is writing fresh code that actually uses StDev since that would probably cause a merge conflict that is harder to fix than this bad name is to ignore.