I noticed that a few people that installed the public beta has major bugs while others don't. Could it be that their download was corrupted or the OS didn't install correctly? The reason why I ask is because I'm on a Mid 2013 15' MacBook Pro Retina with the highest specs and it's running great. I haven't ran across any crashes or major bugs (maybe a few UI graphical bugs, but nothing major..) What about your experience? If you're having massive crashing and lockups have you tried to redownload it and install it again? Just my two cents..