For the system health, I highly recomend using Advanced System Care free from Iobit.
Run the Deepclean option, and let it do its thing.
Also, shut down background processes....

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"!