To reiterate, we don't recommend disabling Superfetch except as a troubleshooting measure for the potential issues mentioned above. Most users should keep Superfetch enabled because it does help with overall performance. If you aren't sure, try turning it off. If you don't notice any improvements, turn it back on.
Again, Superfetch is referred to as SysMain in Windows 10. So that's what users should be looking for when disabling it.
Using the Services App
- Open the Start Menu, search for services, then launch the Services app. Alternatively, open the Run prompt by pressing Windows key + R, then type services.msc and click OK.
- Scroll down until you see SysMain, right-click on it, and click Stop. Superfetch is now disabled.
- Still, in the Services app, right-click on SysMain and select Properties. Under the General tab, look for Startup type and change it to Disabled. (Or Manual if you'd like the option to turn it on when you need it.)