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
yeah - I was trying to add the calculation and network timing in as surgical a manner possible without disrupting any of the other logic. But you're right, this is not likely to cause side effects and should be consolidated.