I'm on an 8 core Mac Pro with a GTX 670, Adobe CC. Raytrace is so slow I hate to use it. interactions are nothing short of pathetic. Even bad at 1/4 resolution. I thought maybe it was b/c I have 2 27" cinema displays and it is just too many pixels --- but maybe I'm wrong. Maybe it just sucks?
I have latest Cuda drivers and all that. If you guys know of something I can do to improve the performance - please share!