Totally agree, Photoshop on mac is much much slower than on Win, and the new release of Adobe CC aka 2014 is even worst (the slowest Photoshop ever - on nMP & iMac 27).
I using PS 7-10h/day (including after work activities) - so I know![]()
Photoshop has been getting worse year over year on both platforms. All of Adobe's applications need to be rewritten a la Final Cut from the ground up. But it's unlikely to happen, especially now that Adobe can just milk subscribers rather than make a case for upgrading.
If you're running CC on a Mac or a PC, you're not getting the best exploitation of your hardware possible. I'm hoping Pixelmator and PS alternatives at least provide a kick in the pants for Adobe down the line. Unfortunately for After Effects the only quasi-competitor is Motion, which Apple doesn't really seem intent on changing roles.