I tested the new plugin version 2025.2 - v1.5.1 yesterday, and the issue has been resolved.

Thanks to the whole team, great work!

Thanks also for opening a Trello board, that's a great idea!

Best regards,
Denis

I tested the new plugin version 2025.2 - v1.5.1 yesterday, and the issue has been resolved.

Thanks to the whole team, great work!

Thanks also for opening a Trello board, that's a great idea!

Best regards,
Denis

Thanks Beppe,

Yes, that was my mistake. Of course, only one mesh per emitter should be assigned in the Octane ObjectTag.
So, I've now gotten my setup to render with motion blur, but unfortunately, the problem with the cumulative preparation time still persists.
Preparation time increases by about 1 ...

Thanks Beppe,

I tried to create the different particle ratio with four emitters with different birth rates and seed instead of using modifiers that change the particle group.

But it crashes just the same.

Please have a look into the attached file.

Best regards,
Denis

Thank you Beppe for your help with the workaround!

Unfortunately I need the particle ratio defined by the modifiers and the different meshes for the different particle groups. My entire setup consists of five emitters and ten particle groups.

In summary:
1. The X-Particle setup works perfectly and ...

Thanks Beppe,

but when I disable the "Use groups" checkbox, the distribution of the different particles becomes even.

I couldn't find a documentation to this checkbox and how to use it correctly. My assumtion was the order of the meshes is the order of the groups, because it works that way ...

Has anyone been able to reproduce the described bug with this file?

I also tried rendering the particles with an X-Particle Generator instead of the Octane ObjectTag, but Cinema 4D always crashed, regardless of whether it was set as duplicate, instance, render instance or multi-instances.

The only ...

I tested this file in 2024.1.2-[R4]-0103 plugin. It crashes also in Live Viewer as soon motion blur is enabled.

Best regards,
Denis

A. Windows 11 Pro 24H2
B. Nvidia RTX 4090
C. 256 GB
D. Nvidia driver version 572.60
E. OctaneRender Standalone version 2024.1.2
F. OctaneRender plugin version 2024.1.2
G. Host application version Cinema 4D 2025.1.3

Cinema 4D crashes when rendering in picture viewer, using motion blur and particle ...

Yes it works, except for the hierarchy solo.
I didn't touch the "use viewport solo" setting, it is activated.