Programming - s-leger/archipack GitHub Wiki
Bulk updates
The objects are designed so any parameter change trigger full mesh rebuild.
In order to do bulk updades on Stair and Walls, there is a special variable "auto_update" to prevent such updates while setting your parameters.
eg for Stairs:
o = context.active_object
d = o.data.archipack_stair[0]
d.auto_update = False
setup presets according your needs
d.auto_update = True