I'm involved in the SETI project of collective computing. These are some of the hardest core computer cruncher around and do not like anything happening to their crunchers. They have been battling W10 since released. Here is an on going thread of their battle with W10 and W10 trying to update their rigs. It is a long read but go to the end and read backwards a little to get the feel of what they are trying to do. From the message boards of SETI@home.

Windows 10 - Yea or Nay?