For starters;
It would be helpfull if you gave your systems specifications.
PC-MAC, Windows ? ? OS? ? Video card, drivers? RAM? Etc? ?  
Poser version? SR installed?  etc etc etc

Then we could try to help, and gladly do so.
Now we are in the dark? ?  (as your background)

Poser 1, 2, 3, 4, 5, 7, P8 and PPro2010, P9 and PP2012, P10 and PP2014 Game Dev
"Do not drive faster then your angel can fly"!