ghostship2 posted at 10:32AM Wed, 23 October 2019 - #4368034

I'm not missing the point. I'm running the same software that everyone else here is running and haven't noticed any difference in render times up or down. What I am reading is that the OP is using ridiculous render settings that WILL INCREASE RENDER TIMES to crazy levels. I suggest using settings that optimize light diffusion, lower noise and speed render times before we get all insane about 12 hour render times. Optimize your settings first, then if your render times are still crap you can gripe and moan about it.

There was a standard render test scene over at SM forum that someone posted a few years ago. It uses figures and props that come with the program and represents a typical Poser scene with figure, hair, clothing and a room with appropriate lighting.

I appreciate your suggestions. I do. But the render settings do not matter to this issue. I understand the point you are trying to make, but I can use the lowest setting available for the fastest render possible, not caring about the quality of the result, and my system will take ten times longer to render as soon as I tell it to use only my GTX 1080 Ti. It performs properly with a CPU render, with the 1050 Ti, and with the 1080 Ti and 1050 Ti working in tandem. It only does **not **work properly when I tell it to use the 1080 Ti by itself, and that is a problem. Especially when it's not a little slower. It's a lot slower.

That is the problem I am trying to solve. Adjusting render settings is meaningless to the issue. The effect occurs at all render settings.

I do like your suggested settings for high quality renders though. I tried them out, and I agree that the result is superior. Once this problem is solved, I will likely use your settings moving forward.

I also thought about using that test scene you mentioned. I remember it well from the Smith Micro forums. Honestly, I just didn't feel like going there to track it down. I felt the default La Femme scene was easier and faster to use.

Also, I'll share the results of the test I did with your settings. This is the La Femme default scene at 1440X1080 with 70 Pixel Samples and 6 Diffuse Bounces. The exact settings you suggested.

GTX 1080 Ti by itself - 26705.03 seconds. Almost 8 hours to render!

GTX 1080 Ti + 1050 Ti - 1387.46 seconds. 38 minutes.

Whatever is wrong with the 1080 Ti or my Poser, it needs to be fixed. This is a serious issue.

Also, just out of curiosity, I ran the same test with my usual settings of 100 pixel samples and only 4 diffuse bounces. Render time with the 1080 Ti + 1050 Ti was 2381.48 seconds. So my usual settings are about 20 minutes slower than your suggested settings, and provide a slightly dimmer result. As you pointed out, your settings are superior. I'll be using them moving forward.

But I still need this very odd issue with 1080 Ti's (or with my specific install) figured out.