Multiple instances of C4D 2025

[Jukyan]

Hello,

I'm using Octane with multiple instances of C4D for many years, which works perfectly for small projects, allowing me to keep using live viewer while rendering with other C4D instances.
However, since C4D 2025 I can't launch multiple instances of it.
the -parallel command seems ineffective.

Does anyone know to do that ?
So far I haven't found any answers.
Thanks
J.