Hi!
I’m on MacOS 26 Tahoe and MacBook Pro M3 Max.
Same issue on C4D 2025 & 2026 so I’m assuming it has to do with Tahoe.

Joni

Same issue here. The GPU is deselected and only denoising is active.

When setting the device options, only denoise is even listed as an option.
Once exiting the device settings, the GPU check reverts back to unselected.

Screenshot 2025-09-25 at 13.03.52.png

Also, Octane is not showing up in ...