Speeding up VM startup

A small tip that was suggested in a thread I saw was to disable dbus from looking for disabled services.If its simple and doesn’t break anything it can be very convenient for starting up from a snapshot.

Is there any exact quote on how to do this?

systemctl masking whole dbus from startup is not a great default choice
for a distribution. Might be worth research/doing for advanced users
that know what they are doing.

It was based on the second post in the thread but I guess its too much of a hassle to bother.