Depends on whether a supported GPU is in the MBP or not. If it is an Intel GPU, then no hogging of GPU by Raytraced. If it is an NVidia GPU, no hogging of the GPU. If it is a recent AMD Radeon GPU then you get Raytraced potentially using the GPU - if set to do so.
Dear. I have a MacPro late 2013 with 2 AMD radeon cards and 16 cores.
Working in Rendered Display Mode brings many crashes all the time.
I have try to reduce regen frames from 5 to 1, enable fast preview in Cycles,
reducing integrator settings reducing SEED from 128 to 64…Nothing works.
Its very frustrating. Even working only by CPU disabling video cards my performance program
shows 4% of usage the Cycles still crashes.
What display mode do you mean, Rendered or Raytraced? What Rhino version are you currently using, and on what OSX version? Would be useful if you pasted the text output of the Rhino command _SystemInfo