Quote - may be some did knot know, if you right click my computer properties, advanced, preformance
and set from let windows decide,  to adjust for best preformance, on my test  render at  defualt  was 171 sec. after change was 63 sec.  note. you will lose your fancy windows  graphics.

something I did not realise, my first render time took into account loading of the textures, then I made the change to windows, the second render time was faster because the textures were loaded into memory, now my render test's are inconclusive,  so  I,am back to being a lurker.