Thx for the reply Acadia, I'll give that a try by reducing frames, I just read in some tutorials that the more frames gives the cloth more time to settle.

 

The converted clothing I mainly use is Daz's Morphing Fantasy Dress, as I said previously it works ok with simple standing poses.I have tried converting a couple of other pieces of clothing but they didnt even start calculating the frames, just sat there for 2 hours with the wee egg timer cursor,so I presumed they were ineligible.