1. Disk usage. Sadly I've replaced a lot of drives over the past few years over that one. Try this first.
Run CHKDSK /F /R /X on all drives and see if that helps.
2. TURN THIS OFF! Read https://www.howtogeek.com/224981/how-to-stop-windows-10-from-uploading-updates-to-other-pcs-over-the-internet/
I've been having some performance issues over the past month. I have no idea how it started. my disk & Ethernet have been high and I cant figure out why. I've tried scanning for malware and disabling services but nothing changed.
Disk usage
ethernet usage

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