Ati's drivers are a huge issues for anything with opengl. For the last six months. Locate you poser.ini file, and search for boxpicking=0, and change that to boxpicking=1

Save that, and restart poser, and odds are you'll find the sluggish issues are resolved.

Supposedly this month's new ati drivers are supposed to be a HUGE opengl fix, but the months already more then half over and they haven't materialized.

(And for what it's worth, Nvdia drivers have many similar or different opengl issues.)

Oh, and ati drivers are dated monthly, so a rollback one month would be to 8-3 drivers, not 7-10 drivers... those would be from October last year!

Way too many people take way too many things way too seriously.