Red deBayer on the base Linux systems is not real time at max quality/max resolution mode. Co-processor chassis(s) can be added to accelerate that as needed. The Mac platform will not support adding these co-processor chassis.
My understanding is that the Resolve application will deBayer the R3D files, as it does on the Linux platform. But until I actually have a chance to see it myself, I can’t comment on what the performance will be. On the Linux R1 platform (the entry level system), you can get real time playback at lower quality settings.