unity 2017.1 installer very slow download

The download rate became very slow, although the speed of my internet connection is good.
what wrong !!

Same Issues with the latest Beta. 2017.2.0b9.
It Zooms through the first components then slows to a crawl around the 10th component

  • really really slow, like 1 meg every 2 minutes.
    It has done this twice now. All other internet speeds very fast on my machine.

Is it the distributor? - are downloads getting capped at so many GB’s?