Are you getting any type of error messages as in Out of Memory or is it just locking up? Make sure you have NO other programs running ie/internet browsing/chat programs/anti-virus etc...things of this nature to start with. How mnay polys are in your scene? How many PZ'3's? Save often! V5 is still in it's infancy and memory problems are a known issue. You can try, I as I was wisely told.....when you using Poser peeps, delete body parts that are hidden by clothes, this lowers the poly count. Import 1 Poser item at a time & save back to Vue as a .vob(native Vue object). If the characters are at a distance don't use a high end texture mat as it won't really be seen. Hope this helps :) Oh....and please report any of these issues to E-ON and upload your scene you are having problems with to technical support...that's the only way these issues will come to pass :)