Windows update often takes certain storage space on the system C drive. And if the system C drive is out of space after Windows 10 update, the computer running speed will slow down.

Does Windows 10 Update slow down computer?

The practical value of Windows updates cannot be overstated. But as useful as these updates are, they can also make your computer slow down after installing them.

Do Windows Update slow down computer?

Every new update has the potential of slowing down your computer. A new update will tend to put hardware to work a little bit more but the performance hits are usually minimal. Updates are also likely to turn on new features or processes that were not enabled before.