My Win10 update 20H2 is 5 times slower than before...

New Contributor

I use Gmail, Google, Chrome, Candy Crush...


8 Replies

Hello @HuggySW


Suggest you to run System File Checker scan:


1. Search for 'command prompt' using Cortana or Windows Search.


2. From results, right click on Command Prompt and select Run as administrator.


3. Type sfc /scannow command and press Enter key.


4. Let the command complete and then reboot the machine.


If issue still persists, perform clean boot:


See if it makes any differences.


Would you mind clarify your issue.

Do you mean, updating Windows installer was slower?


After you installed updates, your PC becomes slower?



After installed updates(20H2) system became slow...


I have an old laptop with an AMD Dual-Core E-350 CPU...  Now it idles at 30% plus of the CPU...





Looks like I got an update, and now everything is back to normal operation...

Thanks, if you had anything to do with it...!!!




Glad problem have been solved.

Windows team regularly evaluate products and review feedbacks and log files to improve it and they release updates to fix issues and improve system quality.

That is why installing updates are very important.


As it turned out it was a VIRUS that did the slowdown, sorry...




Did you manage to remove the virus?

You may run a full system scan with Windows Defender.