How to Disable Superfetch via Windows Services 

The Superfetch feature can be toggled on and off through the Windows Services interface. 

How to Disable Superfetch Through the Registry

You can also disable SuperFetch in the Windows 10 registry by modifying the EnableSuperfetch value. 

What Is Superfetch?

The Windows 10 Superfetch service is supposed to guess which applications you may opt to use, then load their corresponding data and necessary files into memory beforehand, but it can end up slowing your PC to a crawl instead. If you believe your PC is sluggish and not reacting as quickly as you’d expect, disabling Superfetch could help speed things up.  

Other Ways to Fix High Disk Usage Problems

If you’ve disabled Superfetch but are still experiencing slowness issues caused by high disk usage or other resource-related problems, one or more of the following can be the culprit.

Diagnostics tracking: This built-in feature collects data about your PC’s configuration as well as any issues Windows may encounter, sending it all to Microsoft to help improve future versions of the operating system.Search indexing: All files and folders stored on your hard drive are indexed by Windows, making it easier and quicker to search for a specific title, type, or even for individual contents within a file.Windows Tips: You may notice that tips or suggestions appear at different points while using Windows. While helpful, these originate from an application that is constantly running in the background and could utilize valuable resources.Malware: A common cause of PC slowness and crashes, viruses and other types of malware can wreak havoc on disk usage, CPU cycles and more.