Hello steve576, thank you for the report and I am sorry for the troubles you see while avast installed.
If you are willing to help to analyze the issue, I would like to ask you for installing Avast back on the machine and provide us performance logs from xperf tool. It is not unfortunately available for download as a standalone tool and need to be installed together with ADK (Assessment Development Kit, but feel free to install the Performance Toolkit only):
https://docs.microsoft.com/en-us/windows-hardware/get-started/adk-installThen please run elevated command line and type this command:
"c:\Program Files (x86)\Windows Kits\10\Windows Performance Toolkit\xperf.exe" -on DiagEasy+DISPATCHER+Profile -stackwalk profile+CSwitch+ReadyThread -start avast -f \avast.etl -on 1492D477-3272-5C0C-D91A-C156CC3CD206 -start inet -f \inet.etl -on Microsoft-Windows-WinINet
then please reproduce the issue and after that stop logging by similar command:
"c:\Program Files (x86)\Windows Kits\10\Windows Performance Toolkit\xperf.exe" -stop -stop avast -stop inet -d xperf-log.etl
Please ZIP the generated xperf-log.etl and upload it to our FTP server and let us know the name of uploaded file.
Thank you.