Windows 10 has been pretty flawless for me ever since it was released. Important thing like always is to make sure you always have back ups or even a image to restore your PC from if needed.
It's a vocal minority that have issues with 10. Since the negativity of this update was getting spammed on Nasty I had a casual look into it, and it seems like only a very few people have had an issue with this update. Seems like a chicken little type deal. My history shows this KB4556799 was two updates ago. I never noticed a performance lag.