Hell @Frankster69,
if the problem still exist you can try the steps from https://answers.microsoft.com/en-us/windows/forum/all/slow-computer-after-downloading-windows-10-update/f5babd0a-3320-4f88-9809-73c8c85880d6
Open Start, type: CMD - Right click CMD and run as administrator
Type in at the prompt: (Hit enter after each command)
Dism /Online /Cleanup-Image /CheckHealth
Dism /Online /Cleanup-Image /ScanHealth
Dism /Online /Cleanup-Image /RestoreHealth
Also run the System File Checker utility:
Open Start, type: CMD - Right click CMD and run as administrator
type: sfc/scannow
This will check for any integrity violations
Restart your system
Guenter