Speed depends on the brand of the motor (and is normally published in the tec specs) and the weight/dimension of the roller shutters.
A popular and cheap solution in Germany is Jarolift, the make about 15 resolutions per minute.
That means for a roller shutter length of 120 cm and a shaft diameter of 6 cm about 20 seconds for opening or closing completely. In my case weight can be omitted because the motor is far more powerful than the maximum weight of this rollershutter.
Not the fastest thing, but tolerable.
I have a space which I want to use for my electronic lab, rather than a wardrobe. Sliders won’t do it, because when I sit in front of one half, I can’t access the other – hence, the roller door for both.
Also the pantry… always thight, and since I do neither want a cavity door nor a normal (hinged) door, I will try a roller shutter.
This will be fun…