I have some services that are always using the CPU and writing to my disk. Eventually they eat up all physical RAM, which causes the noticeable performance hit.
I can't find them in Services.msc, so tried doing
sc config "UserDataSvc" start=disabled in an Administrator's prompt, but get the error:
[SC] OpenService FAILED 5: Access is denied.
They write non-stop, always, and restart themselves after being stopped. They probably write hundreds of GB to my SSD each day so I'd like to disable the services until the bugs are fixed.
I think the main culprit is UserDataSvc.
Here's a GIF showing how tough it is on my SSD after just 19 minutes: