Assuming everything was OK prior to this you may have picked up a virus or a lot temp files. CCleaner will delete all of your temp files. So run these free programs in the following order and they will hopefully solve your problems.

But be forewarned that you are running very near the lower RAM limit for Windows 10 and that will slow everything down. If possible you may want to consider adding more RAM and/or getting a more powerful system.

1- cCleaner
https://download.cnet.com/CCleaner/3000-18512_4-10315544.html

2-RKill
https://rkill.en.uptodown.com/windows

3-ADW Cleaner
https://www.malwarebytes.com/adwcleaner/

4-anti-malwarebytes
https://malwarebytes-anti-malware.en.softonic.com/download

5-your anti-virus

Whenever I get something stuck in the back of my throat, I dislodge it by drinking a beer.
It's called the Heineken Maneuver.

64 bit Win 10 Pro, the latest BiaB/RB, Roland Octa-Capture audio interface, a ton of software/hardware