Stablity slightly improved, but still some weird, occasional CTD's . Otherwise some P7 bugs have been cured, but sadly P8 introduces some new ones.

I personally dislike the new user-interface and the cache-management is totally messed up. Have to clean up the texture-cache manually from time to time, 'cause Poser doesn't do it itself after closing the program and slowly fills up your HD.
But rendering is ways faster and better, so I'lll stick with it and hope, the developers will update their product regularly and eleminate the remaining bugs.