I found this in a Microsoft Help Forum (https://answers.microsoft.com/en-us/windows/forum/windows_10-performance/service-host-local-system-constantly-using-cpu-and).
I googled this issue for a long time, I tried scandisk, defrag, I also read many articles with 10 tips for fixing 100% disk
and nothing really solved the issue until this.
Here is the answer that helped me: fucking WSReset.exe
- IT RESETS THE GODAMN WINDOWS STORE and all the sudden the 100% disk went to 12%.
Now is currently 4%, I am watching youtube stream and have a couple of tabs opened, also the Store. Now is 1% and then 6% etc. Amazing.
To run it, just type WSReset.exe
on Run, on a terminal or even on a Windows Explorer address bar.
It will take some time to run, and then load the windows store.
Gosh. I did not restart my computer yet, lets see if the fix is permanent.
Here are the options in the Forum answer (I only ran the 1st one):
WSReset.exe.
dism /online /cleanup-image /restorehealth
sfc /scannow
powershell
Get-AppXPackage -AllUsers |Where-Object {$_.InstallLocation -like "*SystemApps*"} | Foreach {Add-AppxPackage -DisableDevelopmentMode -Register "$($_.InstallLocation)\AppXManifest.xml"}
update: I had to run it today again