![]() It is not uncommon to see service host SysMain using 100% CPU. ![]() Unfortunately, it eats up a lot of CPU power and causes high disk usage. It does this by learning app usage patterns and preloads apps and programs on your computer. ![]() It runs in the background and optimizes system performance. SysMain description in the Services management console says, “Maintains and improves system performance over time.”. What is service host SysMain also known as Superfetch? Should you disable it? The most popular and suggested solution was to disable the service host SysMain (Superfetch) service entirely.Īll of them worked well until Microsoft decided to pull a fast one on us in the Windows 10 October Update.įor some reason, Microsoft renamed the service as SysMain. The service host SysMain does the same thing as the erstwhile Superfetch service. There are tons of user complaints online and suggestions for fixing this issue in Windows 10. In the past, the Windows service Superfetch was one of the primary reasons for high disk or high CPU usage. Over time it tends to slow down due to various software installs and general maintenance issues. Windows 10 generally runs quite fast on a brand new system. This article provides an instant fix for service host SysMain high disk usage and high CPU usage.
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