Both of my machines are not running as solid under El Capitan as they were Yosemite. Late 2008 macbook and 2012 Mac Mini. Freezes, music playback hickups, and now I just disconvered that Image Capture doesn't let your sort by Aperture or Location or anything other than Name, Date, Size, Height and Width anymore. Driving me crazy! I don't want to use Photos because I like to manually sort my images from my cameras and iPhone into dated folder by the camera they were shot on. This was espeically handy with my iPhone because I would do a dump every couple months and would sort out photos/videos I captured on the phone by aperture because images I saved from the web don't ever have apertue information in the file. Now I can't do that and they only think I can think of is that Apple got rid of this functionality to force us to use Photos. In the decade I've been using Apple computers this is the worst OS update I've ever used.