Regarding Poser's Cloth Engine: It's certainly not bad.  The only problem is that it is bothered with geometries that are not made for its use. If you build meshes "by the book", you get very, very good results in no time.I've proven that many times (and have been preaching it ever since the Clothroom came out). With a cloth engine, "a lot helps a lot" is the wrong way. So no high-resolution meshes with countless polygons (this applies to all physics engines, by the way; other apps use low-res proxies for high-resolution meshes). Rather, you should build meshes whose edges follow the flow of the material. Add sensible settings for different parts of a garment (e.g. friction is important, stretchiness can help, etc.). This way I get 4-8 seconds computing time per frame for tops. And, no: one setting for all doesn't really work.

Fact is, without some knowledge and understanding of the matter you won't get far in the Clothroom. At best, you get random results that can hardly be reproduced. But that is not different with DAZ - because "they also only boil with water", as they say here.

---