Recently started testing out Redshift for Metal/Big Sur, and it appears TFD breaks Redshift’s ability to detect the GPU. When trying to render, you received “No Devices Found” error, even though C4D detects the GPUs in Preferences/Viewport Hardware.
Removing TFD allows Redshift to work correctly. Not sure where the bug lies…with Redshift, TFD, MacOS…or all, but reporting here as well as with Redshift.
2019 Macbook Pro