Loading PackageManagement module into session causes 10x slowdown in command completion

[daviwil]

Hey team,

Just filing this issue here to track it while we investigate. I fully intend to help get this issue fixed when I have a few free moments :)

This issue appears in any PowerShell host. Start up powershell.exe, PowerShell ISE, or PowerShell extension for VS Code and try getting IntelliSense for Get-, comes back instantly. Now, import the PackageManagement module and try to get IntelliSense got Get- again and notice that it takes 2+ seconds for completions to come back.

Seems like there's an argument completer or dynamic parameter that's causing the slowdown.