Crop & Straighten Tool very slow when Smart Preview is enabled and the image file is stored on a NAS
Issue:
- Lightroom Classic Version Number: 13.1 (also tested on 13.0.2)
- OS Version Number: Windows 11 23H2 Version 10.0.22631 Build 22631
Steps to reproduce:
- Find raw file from a Fujifilm X-Trans 4 or 5 camera, such as the X100V or XT5.
- Ensure it is stored on a NAS (in my case, a Synology DS920+).
- Enable the option "Use Smart Previews instead of Originals for image editing"
- Import into your catalog.
- Build a Smart Preview.
- Attempt to use Crop & Straighten Tool.
Expected result: Image can be cropped and straighted/rotated in a responsive manner.
Actual result: The tool is very slow compared to using it on any other file format either on the NAS or on a local drive.
What is very strange is that is that the tool is very responsive on the file if any of the following are true:
- There is no smart preview available.
- The preference "Use Smart Previews instead of Originals for image editing" is disabled.
- The raw file is stored on a local drive (and Smart Preview is enabled).
Here is a sample raw file with which the problem occurs. https://drive.google.com/file/d/1LSukJWPgetuvnSxkpQnaVvi6vbdS19t0/view?usp=sharing
