Delay to greetings after caller selects extension voicemail box

I just set up my voicemail boxes with several "message only extension" group mailboxes with custom greetings which are accessible from the main company greeting (which is also a custom greeting--caller presses "1", "2", or "3", etc.). There is a long delay between the caller selecting one of the extensions and when that extension's greeting plays. It is almost 10 seconds, which seems unusually long to me.

Is there any way to shorten that delay?