For years I have been dumbfounded how wild-wild-west the screensavers are on my Macs. Shuffle has acted buggy on every Mac I've owned and every OS. It will often choose a couple dozen from my 1000 pic album and just repeat them. Slideshow has no control over duration. Searching for solutions or 3rd-party apps to do the job better only shows that I am the only person in the world who has ever wanted to see and control the images I have collected or made. Certainly this is not true. My perception must be skewed. Any recommendations/solutions? I did see one article that had you messing around in Terminal to change the slideshow duration, but there must be an easier solution.