slow object scattering

[dobe]

Hi octane user,

i have try to do a grass field with megascans 3d plants in octane and Blender 2.8.... but somehow it's very slow.
I compared it to e-cycles and graswald. both are much faster even if the result is not necessarily the best.

i have used the "scatter plugin" from blendermarket: https://blendermarket.com/products/scatter

3:10min to 15:00min is a huge diffrent

Is there a solution to speed up the rendertime in octane?

[linograndiotoy]

There several ways to speed up render time.
Would you mind sharing your scene and/or your setting so we can take a look?

I've rendered this in less than 1 minute and 6 seconds (500 samples, no denoiser used - 2 RTX 2080 Ti cards):

[grimm]

Yes, if you could share your scene, I have both Graswald and the Scatter plugin. It would also be nice to know what your hardware is, GPU and driver version.

Jason

[J.C]

Scattered objects with alpha transparency can really slow down Octane renderings. The only cure for this at the moment i know is to enable RTX.

eg.
a scene rendered with 256 samples, scattered grass with alpha transparency takes:

RTX OFF:
42 sec

RTX OFF and alpha shadow off
36 sec

RTX ON alpha shadow off
10 sec

RTX ON
13 sec