Well, I guess it aint your 3d styles.Obvious other suspect is updating
your videocard drivers.Maybe you are using a complex fill / texture?
This also creates larges pdf's so that might also be a solution to
change them to a simpler fill / texture.Do ...
Looks like you're using the vectorial engine which is notoriously slow.
Maybe better off using the hardware acceleration? As for the pdf being
too large, this is a dead giveaway that your 3D exported image is simply
too complex / heavy. If you really...
You have to get used to it, but it's a powerful tool. One of the
advantages is the integrated floor plan display. In fact, everything
you've done with the morph-tool you could have done in the stair-tool.
The tool allows the use of morphs for your tr...