Not in poser. Perhaps other ( and more expensive) 3D-programs have that option. The poser clothroom is not so fast as other programs like 3D-studio.
You could try to decrease you clothmesh density to improve the simulation time or change the simulation settings. I use poser 8 and poserpro with a core2 quad processor, and most of the time I have simulation times of about 5-8 seconds a frame.
When I have a simulation time of more than 30 seconds, I first try to change the simulation settings, especially the coliding objects should be set to a minimum: if you have a dynamic skirt, most of the time you only need the hips, the thighs and shins to colide. (or even less )
Don't forget to uncheck hair objects, which can be easily forgotten, or other objects in the scene you don't need.
If nothing else helps: decrease your meshdensity.
And I agree: dynamic cloths are wondefull.

best regards,

Bopper.

-How can you improve things when you don't make mistakes?