Sigh. It looks like you're comparing apples and oranges.

Poser 12 is not an option as I'd loose all the legacy Python scripts I constantly need for my figure work.

(Besides, after having to BUY POSER 11 TWICE because of their idiotic "phone home" scheme, I'm not really in the mood to reward Bondware by upgrading to Poser 12, anyway)

The GPU I have is a GTX 1650. Which has no RTX cores.

Which, at least from what I've read so far, makes her actually slower with Optix than Cuda.

https://blenderartists.org/t/tested-optix-for-gtx-the-good-and-the-bad/1233793

https://www.reddit.com/r/blender/comments/r85j1s/cuda_or_optix_for_gtx_card/

I state again:

With Poser 11, on my machine, Superfly is WAY slower than Firefly. Tried it several times, including Superfly "optimised" scenes.

And replacing displacement maps with real polygons will be A LOT of modelling work, not to mention in some scenarios cause a massive slowdown. It's not just grass. What about all the detail work on clothing?

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The Superfly preview is really bad. And as a "nice" preview is really important to me, that alone is a complete no-go.

My GPU is a Geforce 1650 GTX. That does not have RTX cores.

So probably no speed benefit for me, anyway.

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Also, I have no "need" for a Photorealistic render, anyway.

The kind of semi-realistic "Poser-style" results I get are perfectly fine for me.

I'm all for faster render times.

But it doesn't look like the benefits outweigh the sacrifices.

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But lets assume all those problems could magically be solved by upgrading to Poser 12.

And that all the Python scripts I use would be upgraded by some kind soul to Poser 12.

And I would find the time and energy to update / upgrade / convert all my Firefly optimized figures and scenes...

...all I'd have gained be a "better" render engine.

And Poser would still have no figures better or at least equal to G8.

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Sorry, I upgraded Poser from Poser 4 Vanilla to Poser 11.

Without really high quality figures, I won't upgrade again.