I hate to disagree - memory leaks are still plentiful.  Resources plummit & cannot get them back & this is not just with poser items. It all depends on how complex your images are & what you are using,  I know for example 1 Xfrog Pine dropped me down to upper 60's.  Right now I'm working a pic & my resources are already at 56% and I have no poser items in it as of yet.

But yes they are still working on it  and trust they'll get it worked out.