Same here! I have a Ryzen cpu aswell.
- My battery life went down from~4h to 1h. The crazy part is that my battery life is really bad, even if I limit the CPU clock to 1ghz, which I did for testing.
- The fans never power off.
It is a mess! If i only knew before. I would recommend anybody to prevent this update via GPO, especially if you run windows on a laptop.