Programming

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