I have a fast iMac which will open a CR2 raw file and apply a Photoshop Action to sharpen and reduce image size in less than a second. If I import the same raw file into Lightroom then right click to edit in Photoshop, the same Action takes 15 - 20 seconds. Why is it so slow?
Hardware and Software:
iMac Retina 5K 27-inch, Late 2014 with 4 GHz Intel Core i7, 32Gb RAM and OS 10.10.3. LR 5.7 and Photoshop CS6 13.0.6 x64.
The raw files are stored on a 4Tb external drive via Thunderbolt and the LR Application, Photoshop Application and LR Master Catalogue all reside in the Applications folder on a 512Gb Apple SSD. I've tried adjusting LR Preferences for editing in Photoshop but it made no difference at all.
