Microbot Assault double move?

[Folkish Elm]

Can anyone help clarify whether a cloud of microbots created by the spell Microbot Assault is limited to a single 20ft move per turn or if it can double move?

The spell just states that it has a 20ft flight speed.

It feels to me that RAW either interpretation is possible?
All thoughts welcome and thanks in advance.

[Pantshandshake]

It has a 20 foot flight speed, so it moves 20 ft per round closer to something hostile to you.

No, it can't double move. If it could, the spell would say that.