Agreed. I find the dancing on the head of a pin about this silly. I've used nothing but Net Time since the earliest days of WSJT, almost 15 years, and average DT values are always quite small. Over these years, I've used 3-4 different Thinkpads, and I've always left them running 24/7. I've also found the clocks in these computers pretty stable when I've taken them into the field for grid and county expeditions, and for Field Day.