Right-click menu much slower than Windows Explorer (on Windows 11)

The right-click menu on my Directory Opus (v12.12 Windows 11) takes 20-30 seconds to open, compared to 2-3 seconds in Windows File Explorer. If I hide the Windows items in Preferences it opens much quicker, but is far less useful.
Is there any way of detecting which shell extensions are the likeliest cause of these delays?

Opus 12.12 is very old. Is there a reason you aren't using 12.33 at least?

Please link your account.