Win10 desktop official version 10586.318 bug: will cause the computer to run slowly

Microsoft today launched a new wave of cumulative update push for Win10 official users, the system version number will be upgraded to 10586.318, the update number is KB3156421. As always, this update is focused on fixing problems and improving system performance, but the bugs found this time seem to make performance a little backward.
Microsoft officials have found and reminded: "If you find that your PC is slow to respond after installing this update, then you may have encountered problems that we are tracking, in the next few weeks. We will complete the repair. Closing Cortana will alleviate this problem, and we look forward to seeing your questions and test results below the post and providing us with information to solve this problem faster and better. ”