Hi Luigi Abbate,
Thank you for reaching Microsoft Community.
"svchost.exe" is a critical system process needed by Windows to process its services. May I what are the applications installed on the device? Do you also have a third-party antivirus installed?
May I know what Windows Edition, version and OS Build is your Surface Pro 8 running? To check, go to Windows Settings > System > About then check under Windows specifications.
Try also running these steps below and see if the behavior improves?
1: Run Surface Diagnostic Toolkit
See: Fix common Surface problems using the Surface Diagnostic Toolkit (microsoft.com)
2: Check for Windows Update
Go to Windows Settings > Update & Security and select Check for updates
Make sure all updates need are installed including Optional updates
3: Update drivers and firmware
Check what is the current OS Build of your Windows version by going to Settings > System > About.
Go to Download driver and firmware for Surface, choose Surface Pro
Then click the link next to Surface Pro 8 then click Download on the next page.
Choose the .msi file that matches your current OS Build and click Next.
After downloading, run and install the .msi then Restart.
4: Run System File Checker Tool
Open Command Prompt (Run as administrator)
Type and enter these commands below:
DISM /Online /Cleanup-Image /CheckHealthDISM /Online /Cleanup-Image /ScanHealthDISM /Online /Cleanup-Image /RestoreHealthSFC /scannow
Note: Allow each command to complete its process before entering the next command line
Exit Command Prompt and restart the Surface
I would like to ask also about the reset that you mentioned, was it a Reset within Windows where you can choose between Keep my files and Remove Everything?
Kind regards,
Marrion