Allow me to further sugest ; Advanced System Care free, from iobit.

The free version is pretty-pretty- good- good.

Run the deepcleaner, and then run the boost section of the Advanced System Care Free.

It helps on all systems but mostly on older, and thus more polluted systems.
Euh, version 5.21 now.

Happy for you that Poser is more stable now.

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"!