Again, I am a veteran Photoshop user who is desperately trying to get weaned of PS and start using AP exclusively. But the speed of AP's "Refine Selection" is just terrible. Any adjustment is followed by about 3 seconds of waiting on my 3.06GHz iMac. And yet on the same iMac, PS's "Refine Edge" features work instantly, with no delay at all. Change Feather, Smoothness, etc. It doesn't matter. PS is instantaneous while AP gives a progress bar.
This seems to be related to the same slowness we see with the Export Calculations. These things need to be instantaneous, and on our modern machines, there is no reason they should not be, especially when they are instantaneous in Photoshop.
Thanks.