Hi! 
First message in the forum! thanks in advance for all the help! 

 I normally use CC4 to prepare characters with assets like clothing etc and then use the pose tool to put them in the pose I want. 

As Im playing around with it, I encountered this issue with the clothing. I want to simulate the clothing for the pose my character is doing, not for an specific animation. I just cant find an option to "keep realtime playing" or something like that. 
While Im writing this, I think my best options are to create an interpolation between a T pose and my current pose, in the fashion of Marvelous designer... I just find it very convoluted. If someone knows how to turn on realtime without an specific animation playing or anything that may be helpful, I would really appreciate it!