Just done 100 pings to 22.214.171.124. As mentioned earlier, when it was poor, some 15-20% were timing out; this time 0% timeouts, all times were 14-16ms.
Whatever's been done, and clearly something has been done, it's back to normal.
Happily running Windows 10 Pro on both desktop and laptop
We have more and more laws, and less and less enforcement