Guess what!
I disabled the "Intel hyperthreading" and rendered the Dordogne in Vue again.
Result 9 minutes and 2 seconds!

Compared to earlier:
Old computer: 19 minutes 45 seconds
New computer: 14 minutes 48 seconds

That is increadible! It is similar to the Poser speed. I must get back and test some more before I believe it. ;o)
Just wanted you all to know.
Thanks a million to all of you!
shouting and jumping around...