If it's still the same after another reboot:
1. How much free disc space?
2. Post a link to a Speccy you make: see https://www.ccleaner.com/docs/speccy/using-speccy/publishing-a-speccy-profile-to-the-web
It took forever to get the May update but eventually it came just before 1809 was about to expire on the 12th Nov now I have got it, everything has ground to a halt, on startup it takes ages to get up and running, any ideas ?, I can provide a Diag file if required