Why is my render taking so long?

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Why is my render taking so long?

Postby kuqqka » Mon Aug 15, 2022 6:20 pm

kuqqka Mon Aug 15, 2022 6:20 pm
So I've been optimizing the scene and the lowest I could get down to has been ~40 minutes per frame (I have to deal with a total of 37 frames for the current scene). I have Volumetric fog on the scene and rendering in 3840x1920.

Specs:
Win 10 64 | Geforce RTX2070 SUPER | i7 9700K | 32GB

Here's my render settings:
Image
Image
Image

Edit: I got it down to 25 minutes per frame which I'm pretty happy with, I lowered the max. samples to 2100, and got rid of some fairly detailed objects on the interior of the scene.
Last edited by kuqqka on Tue Aug 16, 2022 11:44 am, edited 1 time in total.
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Re: Why is my render taking so long?

Postby promity » Tue Aug 16, 2022 1:09 am

promity Tue Aug 16, 2022 1:09 am
Try lowering the samples to 300-400 or lower and gradually increasing until the animation artifacts disappear (need a test render with a smaller frame size), especially when using volumetrics.
Your final frame size usually doesn't require too high a sample value, unless it's an interior animation.
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Re: Why is my render taking so long?

Postby elsksa » Tue Aug 16, 2022 11:39 am

elsksa Tue Aug 16, 2022 11:39 am
Hi,

Render settings are always scene-dependant.
Aside from a few parameters, nothing seems excessive.

It can come from the actual scene. Some assets, or complex shading network to name a couple.
Could you share more information? Screenshots of the scene?
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Re: Why is my render taking so long?

Postby BadBilly » Sat Aug 27, 2022 12:47 pm

BadBilly Sat Aug 27, 2022 12:47 pm
how heavy is your scene? a lot of mesh?
limit your subdiv surfaces where you can - this is a huge factor especially on heavier scenes.

Your sample level looks very high as well.
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