Unless you've got 64 bit, having more than 3-4 GB of RAM isn't going to do you any good. And no, Poser 8 isn't a 64 bit app, so the only good 64 bit would do is relieve the stress on the computer for other things. (Which is no small consideration.)

Poser Pro has a 64 bit renderer, and PP2010 will be a 64 bit app, as well. That's really the way to go... but of course, that's more $$ again.

Is your 2 GB processor single core, or dual? If you're already on dual core, my guess is that upgrading the RAM would give more short-term relief.

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Hardware: AMD Ryzen 9 3900X/MSI MAG570 Tomahawk X570/Zotac Geforce GTX 1650 Super 4GB/32GB OLOy RAM

Software: Windows 10 Professional/Poser Pro 11/Photoshop/Postworkshop 3