Windows 11 file explorer is slow, lagging, hangs!

I also experienced Lags with the Explorer:

1. On Windows 10, i could solve them by removing external file-drives (SMB) from Quick-Access. I created a folder with Links to the drives instead and explorer was fast again. Probably the explorer tried to connect to these drives and for some reason failed, even though the connection was up and working.
2. On Windows 11 on a new computer i have again troubles with the explorer, this time i think it is due to a wrong/old account which is no longer active:
   The problems came with the "Home"-Button, which was added at some point. Also the "Please sign in" only shows when selecting the "Home"-Button.

This might also be related to an account i am unable to remove:

Clicking on 'Manage' opens the login-page for the first account and i can not find the old account in the first account to remove it.

Can your problem also be associated with one of the issues above?

Does anyone know how to solve the second issue by e.g. disabling the "Home" button, changing the account in the explorer or removing a no longer existing old account?

Updated Info / what i use:

1. Don't use mapped Drives oder External Folders in Quick-Access. Keep all pinned-directories pointing to local files / folders. Instead, save them as files / links:

2. Disable OneDrive.exe in StartUp-Apps. If this still does not help, completely disable or remove onedrive: https://support.microsoft.com/en-us/office/turn-off-disable-or-uninstall-onedrive-f32a17ce-3336-40fe-9c38-6efb09f944b0 
3. 'Home' as startup-folder seems to also be slow, change it: https://www.digitalcitizen.life/how-set-start-location-file-explorer-windows-10/