Low speed of the rendered frames per second crash.

[richard_geleijnse]

Hello,

i have a rtx 24 gb graphics card that i can't fully use because another value remains very low. (see attachments)

Is there something in the hardware or software that i can adjust that will improve this value?

CPU: Intel Core i9-7940X (14 core)
memory: 128 GB DDR4
GPU: RTX a5000 (24GB)

Hope someone can help.

[npg]

Can you share something about your scene, at least some images or some other description of its contents and complexity? Framerate below 1 fps is very low and usually happens when the scene doesn't fully fit in memory (which could also lead to an error or crash) and the system is constantly swapping between system and GPU memory. But this is obviously not your case.

I can't see the resolution you're rendering at, is it very large? For interactive rendering try using the upscaling denoisers: Optix or DLSS - they show an upscaling icon or slider, respectively, on the top toolbar.

[richard_geleijnse]

Thanks for your response

Upscaling denoisers work well for interactive mode, it makes me go through my scenes a bit smoother. Thanks for the tip!

the biggest problem is mainly when rendering my final image.

I work with 3ds max. The scenes are divided in xrefs. Usually situation, building and interior. I add decoration and people per camera scene to limit the amount of geometry.

This time the model is an import from Sketchup. But imports from Revit react the same. I render 6000 pix wide. Ultra mode with 50 samples. If the samples get higher the chance of crashing is also higher.

A soon as I hit render the fps drop. If it drops below 0.20 the program crashes with a D3D error. I also opened a scene with less geometry for the test. As soon as I hit the render button the fps drops drastically.

I added some extra images with info.

[npg]

It is expected that framerate would drop when you start offline rendering at a higher resolution. You are rendering at around 20 megapixels for final, compared to the ~2 MPx in interactive, according to the screenshots.

When framerate drops below 1 fps the GPU driver may time out (TDR - timeout detection and recovery). You could increase the timeout value in the TdrDelay registry key to 10 seconds: https://learn.microsoft.com/en-us/wi...-registry-keys
But this is not a real fix, it just makes it a bit harder for the driver to crash.

It seems that your scene is just very heavy and/or it is using heavy render settings. Could you screenshot the entire render settings left side panel of Vantage in Advanced mode (it would probably require two screenshots after scrolling vertically)? I'm asking because the preset (Ultra) does not set all the settings, it only forces some of them.

[richard_geleijnse]

Thanks for the feedback. I will adjust the delay.

In the attachments you can see the printscreens of the render settings.

Thanks for thinking along about this.

[npg]

Settings look normal overall. You could try using fewer bounces for reflection (for example 4) and refraction (for example 8 ). You could also try disabling "shading graph for glossy/gi" though this could cause some visible differences. I don't expect a huge speedup from these settings, but they could move the needle. I can't think of a magic way to make your render 5 times faster - it's just a heavy scene and large resolution

For offline rendering you may get a minor speedup if you select the "only final pass" denoiser option (if you haven't already).

By the way the screenshot shows 45 warnings in the log (icon in lower left corner) - you should check if they are about something significant, just click the icon.

[richard_geleijnse]

Hello, thanks for all your advice. I will test all the tips to get the best

looks like I will have to clean up my scenes even more than I already do. This is because a lower resolution for architectural images is not desirable.