Help on Animation rendering optimization and speed-up

[Liketheriver]

Hello to all,

I am in the middle of a project, and now I need to render a series of low-resolution animations to provide previews to the customer, it is a large file, about 13 millions polygons, with many separate objects (files exported from Catia) .
I have 3 980ti liquid cooled, and I'm waiting for a 1080, in live view the rendering time is not too much, 10 seconds for the preview (128 samples) and 4/5 minutes for the production files, but when i go to picture viewer I lose a lot of time each frame when cinema update the camera movement (at the moment is the only thing that moves, with some bank that illuminate the background, but are few polygons), and in a 2k frames animation some seconds become hours.

I have tried to separate the objects that are fixed (so almost all of polygons) by assigning a tag to moving objects, and changing the mesh number to 2 or 3, and tried both manual and automatic detect assignement in geometry control, but the rendering in picture viewer is much slower than that in live view (10/12sec vs. 25/30), what it is that takes so long to update? there are some combinations of tags or particular octane settings to be set to optimize the scene?

alternatively, I can export the cinema 4d file (animated) and open it directly with the standalone for render? it maybe can cut some time...
thanks for any advice

[aoktar]

What's yout render settings? By default it's set to auto mode to detect movable objects,etc.. It will just update changed parts. And all movable option in render settings will cause same operation as in LV's default state. There's not much different LV vs. PV. Just another one is about subdiv or hairs. LV use viewport data and PV is feed by render data.
Are you sure that you consider export times in Live Viewer? And do you use subdiv objects?

[Liketheriver]

Hi Aoktar,

render settings are those:

for the preview i set only 128 passes

thanks for the tips, I've searched for all the subd surface in the scene and replaced them with the octane tag with subdivision group setted to 2 (it was the same subdivision level I had before, the software now subdivide the object directly in render phase instead of sending a bigger subdivided surface, right?), disabled out of core textures, and set geometry engine and geometry Control as per default.
Now i can see really good timings, like 10 seconds per frame.

I have another question about optimizing etc, but i'll ask you when i have documented a little

thanks!

Ciao
A.