Commonly, the frame drops problem can occur in one of your installed games. But in some cases, you might also experience massive FPS drops in all games, just like the issue you are having right now.
Click the link below there is a several method to fix the fps drops in all games.
https://www.partitionwizard.com/clone-disk/fps-...
Regards,
Nicole
________________________________________________________
Standard Disclaimer: There are links to non-Microsoft websites. The pages appear to be providing accurate, safe information. Watch out for ads on the sites that may advertise products frequently classified as a PUP (Potentially Unwanted Products). Thoroughly research any product advertised on the sites before downloading and installing it.