Adobe PS Lightroom has become sluggish, my computer's fan runs most of the time when using LR. I have a macbook pro (late 2013) updated 2 days ago to 10.11.1. Yesterday, I downloaded some Topaz software. I have removed the new software, stepped backwards in the LR update as suggested by Adobe. My graphics card is okay. I have increased the Camera Raw cache to 10 gb. LR is still very sluggish and behind my commands giving me the spinning beachball while I wait for LR to catch up. I am not having any problems with PS.