I can't find anything to this here, so for the first time I think I'm the only one with this problem. Finder on my OS X 10.11 Public Beta (15A215h) has major problems. When I open Finder and a existing folder it takes ages to show the content. Also open a any kind of file or moving/copy it to the desktop. Sometimes the only help is to use terminal "killall Finder" but that only helps for a moment. All-in-all Finder is very unstable here. In iCloud Drive to all Files are shown. But when I use the iOS 9 PB App thank goodness all the files are still there. But OS X 10.11 has this finder problem to show files. Also open or save from 3rd Party App doesn't work correct. Disk Utility run/check ok and no problems. Also reinstall the Beta again from App Store but without any success on this. Any other people here with this Finder problem or maybe an idea to fix this? Thanks in advance.