I am trying out ORC but I keep coming against this problem.
One I always get a warning that "Your scenes native version is not available". I am assuming this shouldn't be a problem since it downgrades to a version that is compatible.
Two The estimator requires I put in Octane bench scores for my GPU. I have downloaded the latest Octane Bench for MacOSX but when I launch it t says no GPU's are supported, even though my Radeon Pro WX 9100 renders just fine in Octane Standalone. I have tested the scene in Octane X Stand alone and it works and I get a time per frame so I can input that. Even if I try and search for the GPU in the interface I can't find the Radeon Pro WX9100. It seems it's not particularly Metal or Mac OSX friendly currently