I have not used slideshow in a long time, so maybe this has been an issue for a while. I have a folder of 218 images in a collection, on the same hard drive with my other hundreds of thousands of images I use in Lightroom. The slideshow consists of mostly small jpegs, but also some raw NEF, and DNG files, maybe even a TIFF or two. Yesterday and today I was able to do edits to slideshow settings, run a few previews on only a few images and export that fine. I save my settings as a template.
Today I added some music, made and saved some changes to my template, etc. Then I tried to do a preview, all 218 images, maybe 5 songs. It prepared the images, it started playing fine, but after maybe 12 minutes, I decided to change music order. I tried to do another preview, it seemed to be preparing, but then never played it. I tried hitting play button, it again prepared previews, but did not play.
I quit LRC, which took a little while, then relaunched it, and it again did only one preview but would not play a second one. One time it just plain crashed. Another time it froze, giving me SBBOD.
I even restarted the computer, in case it was a memory issue, but it is still (mis)behaving the same way. Also, when I restarted the program, I noticed it had deleted my template for some reason- it just plain disappeared! I see it in my last backup, with settings from a few days ago, so I know it was saved, and I was able to make changes to it this evening. Why would Lightroom delete it? Am I doing something wrong here? Can LRC not handle a 21 minute slideshow of still images?
I have 32 GB of ram on my iMac 5K, 27-inch, Late 2015 iMac, so I don’t think that is the issue. Running High Sierra, 10.13.6. Any suggestions appreciated.