After having an initial AWFUL experience with Lightroom Classic CC post-upgrade from Lightroom CC 2015, I tried to objectively look at some common workflow tasks to quantify the performance degradation that I am experiencing with Lightroom Classic CC.
I have found that navigating through images in the Develop module is much slower in Lightroom Classic CC than in Lightroom CC 2015 - doing the same operation in Lightroom CC 2015 is more than 2x faster than the new Lightroom Classic CC...
Using both Lightroom CC 2015 and Lightroom Classic CC, I performed the following steps:
- importing and building previews. For this test, I used 70 images from a Nikon D500, which has 20mp images, from RAW uncompressed 14-bit files - the actual files shouldn't matter as what is important is the relative performance in each scenario, and your mileage will vary. For this action, I performed a drag/drop of the image folders into the Library module window.
- specified a 1:1 preview and smart preview to be generated for the images
- after the import is complete, I selected the first image in the Develop module, set the image view to be Fit. I opened the Basic, Detail, and Lens Correction tabs (ones that I commonly use when editing), with the rest of the tabs collapsed/closed.
- I went ahead and performed some common edit adjustment operations on my images including tweaking these settings:
- increase exposure
- increase contrast
- lower highlights
- increase shadows
- lower black level
- increase clarity
- increase vibrance
- increase saturation
- increase the sharpen mask
- increase sharpening
- increase Luminance noise reduction
- Remove chromatic aberration
- Enable profile corrections
I did this to the first image in the develop module, then synced all the settings through the set to apply the changes to all. I then waited a short time while the settings were made.
- I then stepped through the images with the arrow keys on the keyboard. When moving between images, When moving between images, I moved the next image, then waited until the UI completely finished - when in the Develop module, this seems to be when the "Auto" button in the Tone section is available and not "greyed out."
I found that Lightroom CC 2015 was more than twice as fast as Lightroom Classic CC! While the percentage varied from my very first experience with the new update, this was closer to the performance degradation that I initially experienced.
LR CC 2015:
develop nav with settings applied: 3:01 (versus 2:06 with no settings applied)
LR Classic CC:
develop nav with settings applied: 6:22 (versus 1:58 with no settings applied)
While the actual numbers will differ based on PC configuration, I believe that the experience will not. This represents a lof of time where the user has to wait for the user interface to allow the user to regain control, slowing down the overall workflow of the editing process.
Is the Develop module going to get some attention from Adobe to improve this? Keeping Lightroom CC 2015 on my machine will let me work around the performance degradation issues for now, but have to say this is frustrating...
my PC configuration:
i7-5960x CPU - 8 core, 16 threads
SSDs for boot drive, application, pictures, cache, catalog, etc.
Nvidia GTX-1080 (8GB)
display resolution: 3840x2160 (4K)