Render Very Slow

[mvpetropolis]

Hello, I have a big doubt, I decided to test all the limits of my desktop in a render, I rendered an image with 3000 x 3000 Px, I stipulated a noise of 3% in the render pass a and the big scare came, the image took approximately 23 hours to reach this limit, the scene has approximately 2 million polygons and I have 32 GB of Ram and a Core i7 5930 K, would the time be the same for the size of the image and the amount of noise that I stipulated?

[romullus]

What is your question exactly? Yes, i think the scene renders unusually slow, maybe your system is running is out of RAM? We need more information about the issue. Do you get low memory warning from Corona during rendering? What the task manager says when rendering is going on?

P.S. please do not post the same question in multiple places, one topic is enough.

[mvpetropolis]

Here's the print of the message, sorry for creating two topics, the first one I hadn't seen that it had been published, in this scene I have some textures in 4K and all trees are converted into proxy

[romullus]

Thanks. Could you also take a screenshot of task manager performance tab while the slow scene is rendering?

[mvpetropolis]

Thanks. Could you also take a screenshot of task manager performance tab while the slow scene is rendering?

Below is the screenshot of the capture screen, some additional information, in addition to my workstation having 32 GB of Ram, and Core i7 5930 K, these scene files are divided into 3 HDs, 1 SSD which is for the system and 2 others for textures and blocks

[romullus]

Good news - your scene fits into available RAM, bad news - that means you need to search for the issue elsewhere. It could be anything, from poorly constructed materials, to bad geometry, it's really hard to tell without having the scene. Do you notice slowdowns only in this particular scene, or does all your scenes renders unusually slow?

[mvpetropolis]

Good news - your scene fits into available RAM, bad news - that means you need to search for the issue elsewhere. It could be anything, from poorly constructed materials, to bad geometry, it's really hard to tell without having the scene. Do you notice slowdowns only in this particular scene, or does all your scenes renders unusually slow?

Well, to further illustrate my doubt, I did some tests here, I put everything in material override and rendered with the same 3% noise pass limit, in this first test the corona was estimating 8 hours much less than the 23 hours it took me to render the scene, then I did a second test keeping the material override but this time I removed the forest pack from the vegetation of trees and the estimated time dropped to 2 hours and 50 minutes, that is, it seems that the big problem is in the vegetation of trees, I am using maxtree number 95 which is a set of pine trees, do you want me to send you the scene in private?

[romullus]

Sorry, i don't have much time to debug your scene. You can open a ticket in Chaos help portal and someone from support team will assist you further: https://support.chaos.com/hc/en-us/requests/new

Well, to further illustrate my doubt, I did some tests here, I put everything in material override and rendered with the same 3% noise pass limit, in this first test the corona was estimating 8 hours much less than the 23 hours it took me to render the scene, then I did a second test keeping the material override but this time I removed the forest pack from the vegetation of trees and the estimated time dropped to 2 hours and 50 minutes, that is, it seems that the big problem is in the vegetation of trees, I am using maxtree number 95 which is a set of pine trees, do you want me to send you the scene in private?

It's normal that scene with simple material override would render significantly faster than the one with complex materials, even though 8 hours estimate seams quite too much for exterior image. Maybe the issue is in the forest scatter, or in the source vegetation, maybe not. I can only speculate about it. I think it would be better and faster if you would contact the support and try to resolve this issue that way.

[mvpetropolis]

Okay, thank you very much for your attention...