I have had intermittent problems with my Windows 10 laptops when a "Windows Update" has partially self-installed and a reboot has not been done. I believe (although I do not have any specific knowledge about this process) that there are sometimes OS files that cannot be updated "on the fly" and version compatibility issues cause unpredictable workstation performance.

I always start with a workstation reboot - sometimes with a 16 second power down. It's remarkable how many problems disappear after that.

Thanks for the update@