May I know the version of Lightroom?
Are you working on Mac or a Windows computer?
Do you have any crash logs available to share with us.
editing large format photographs
Exactly what does this mean? What are "large format" photographs? Please be very specific and detailed.
Also please state the exact version number of Lightroom that you are using, and the exact operating system.
I am using the latest version of Lightroom CC 2015.
I am working on a Windows computer. Running Windows 10.
Where can I find a crash log?
Large format meaning large megapixel. I am working with very high pixel counts. For example, I have a photograph that's about 100MP.
Try turning off the graphics acceleration. Go to PReverences, click on the Performance tab, then uncheck the box and restart Lightroom.
Thank you! It seems to be moving along now. Still very slow though, but that's expected since the photographs are so large.
If its working by turning off the graphic card , that means you need to update your graphic card drivers to use it with Lightroom.
Could you please increase the Camera raw cache size under Lightroom Preferences > File Handling option.