2 issues in LI2, slowing and freezing during developing, slideshow not showing all images.

Question

1. Lightroom Is slowing down during normal development.
I only have 3500 photos in this catalog and am working on 50 to 200 photo in Raw format at a time,
When Opening and beginning  a project the program worked fine but after a few hours of adjustments the program slows and then  freezes for minutes at a time forcing me to shut down the computer and restart.  I have a 1.5 TB hard drive and have moved the bulk of my files to a backup drive freeing up the MAJORITY of the hard drive for processing.  I have been threw the 8 ways to speed up Lightroom and an finding the problem persisting. IDEA'S?
2. LI's Slideshow is not consistent in showing all the images.
after going through the slideshow's setting and playing the slideshow, LI will show some photos and not others and start over at random order.  Idea's?

Answer 1

Images that are edited in Photoshop will be displayed automatically in Lr only when the image-file saved in Photoshop is the same as the one opened from Lr.
You say you open a JPG from Lr, then edit it in PS by - among other things - adding some layers. Layers are not supported in the JPG-format so you have to either save it as a psd or as a jpg-copy.
In either case this is not the same image file as the one opened in Lr, so it will have to be imported into Lr to show up. If you would flatten your image after editing in PS and then do a <save> to your JPG - not a <save as> - it will show up in Lr.
PS: the only exception is when you open a Raw image from Lr in PS and you save it in PS in the file format specified in Lr for external editing. The saved file will automatically show in LR.
Message was edited by: web-weaver; PS added