Get folder sizes blazingly fast with PowerShell
Install from the PowerShell Gallery with Install-Module -Name GetSTFolderSize. You can add the optional parameter and value -Scope CurrentUser to install it only for your own user.
Blog documentation (I'm too lazy to reproduce here): https://www.powershelladmin.com/wiki/Get_Folder_Size_with_PowerShell,_Blazingly_Fast
Quick demonstration of v1.3.0 in a screen dump:
