OTOY launched "OctanePrime," a stripped-back free tier for C4D users. This usually requires C4D S22 or newer. It does not work with R20. Do not waste time trying to force it.
An NVIDIA GPU with CUDA Compute Capability 3.5 or higher (GTX 900 series, 1000 series, RTX 2000/3000/4000 series). For R20, RTX acceleration is limited in older octane versions. Octane Render For Cinema 4d R20 Free Download
If you have acquired the installer from the official OTOY downloads page , follow these steps to integrate it with R20: OTOY launched "OctanePrime," a stripped-back free tier for
Ensure your NVIDIA drivers are updated to the latest version to maintain compatibility with the plugin's CUDA requirements. OTOY launched "OctanePrime
To download Octane Render for Cinema 4D R20 for free, you can try the following options: