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Lightroom CC is slow...

Forum|Forum|8 years ago
March 27, 2017
13 replies
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My PC specs are:

Motherboard: Asus Z170-AR

Processor: Intel i7-6700K (4.0/4.2 GHz Turbo

Graphics: EVGA GTX 970 4GB SC

RAM: 32GB, DDR4, 3000 MHz (2X16GB)

Operating System: Windows 7, installed on Samsung 840 EVO 250GB SSD

Catalogs stored on the SSD

Photos stored on WD Black HDD

I believe that this is quite powerful PC. However, I still experience slow down when working with Lightroom CC, especially after running it for a few hours. Restarting Lightroom helps for some time but then it slows down again. It is slowing down after merging to HDR for example (in Lightroom). It is also very slow when converting 20-30 files from DNG to JPEG at once. It makes everything slow, until the operation is completed.

I have configured Lightroom the way I have learned to be the best:

Use Graphics Processor - Enabled

I generate 1:1 previews and keep them for 7 days (Used to be 30 days - No difference)

Preview quality: Low (It used to be High and the Medium - No difference)

Standard Preview Size: Auto (1920px) - Same as my monitor size

The files that I process are DNG, from a 36 MPX camera. Some are standard (50MB) and some are in-camera HDR (150MB)

Any suggestions to improve the performance? Where do you think my bottleneck is?

This topic has been closed for replies.

Correct answer dj_paige

1. I import the DNG file to Lightroom (most files are around 50mb, some are 150mb

So it would help if you talked in megapixels and not megabytes. What is the size of your images in megapixels? Ok, I see you said 36 megapixel photos, these are relatively large photos, which will require lots of CPU speed (and GPU if enabled).

3. I do basic editing to each image (colors, light, adjustment brush etc.)

This could be the problem. Using large amounts of brushing is known to slow Lightroom down. You have all the symptoms of the problem caused by lots of brushing.

5. Most images don't require blanding so at this point I convert them to JPEG, and reduce the size to 4672 pixels. This, again, takes time (I didn't measure) and takes resources from the computer (CPU? GPU? RAM?)

I guess this step doesn't seem necessary to me (and I also don't recognize the word "blanding"), and in my mind, this entire step is an unnecessary waste of time. However, anticipating that you have a valid explanation for why this is needed, the speed of converting to a JPG is entirely based on the CPU, and as I said, if you did a lot of brushing, it will take a lot of time.

7. After processing this way a couple of folders, with 20-30 images each, Lightroom slows down dramatically and I need to restart it, What slows down? Pretty much everything. Going through the images, editing some more. I often see a white screen for a few seconds, especially while Lightroom is converting about 10-20 files to Jpeg. But also after this task is completed, then re-editing some of the images can be really slow.

Brushing! It slows Lightroom down. If you are doing a lot of brushing in Lightroom, this is most likely the problem.

Instead of doing lots of brushing in Lightroom, do it in Photoshop; or if you must do it in Lightroom, turn off the GPU acceleration (Preferences->Performance->uncheck "use graphics processor"), do the brushing before you turn on the lens corrections and transforms, and if possible, get a faster CPU.

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bmeiriAuthor

Known Participant

Thank you all for responding

Mohit - I have gone through the optimization last many times.... I don't use NAS for storage

dj_paige - Here is my work flow. I shoot mostly real-estate.

1. I import the DNG file to Lightroom (most files are around 50mb, some are 150mb

2. I select the photos that I want to edit, mark them with 3 stars

3. I do basic editing to each image (colors, light, adjustment brush etc.)

4. Sometime I also merge to HDR. This consumes a lot of resources and after the merging is done, Lightroom will slow down significantly, until I restart it. Even going through the photos becomes a hassle.

5. Most images don't require blanding so at this point I convert them to JPEG, and reduce the size to 4672 pixels. This, again, takes time (I didn't measure) and takes resources from the computer (CPU? GPU? RAM?)

6. Some images require blanding in photoshop. A few sets of 2-4 images. I open them as layers in photoshop and save them to TIFF. This creates some 1GB files. I then convert them to JPEG and delete the TIFF

7. After processing this way a couple of folders, with 20-30 images each, Lightroom slows down dramatically and I need to restart it, What slows down? Pretty much everything. Going through the images, editing some more. I often see a white screen for a few seconds, especially while Lightroom is converting about 10-20 files to Jpeg. But also after this task is completed, then re-editing some of the images can be really slow.

When I look at the task manager, I see that Lightroom uses up to 3GB of RAM. Photoshop may be using 1GB and the browsers maybe 1GB together. So if I have 32GB then RAM shouldn't be a problem, right?

So what is the bottleneck here? CPU? GPU? Me....??

dj_paigeCorrect answer

Legend

1. I import the DNG file to Lightroom (most files are around 50mb, some are 150mb

So it would help if you talked in megapixels and not megabytes. What is the size of your images in megapixels? Ok, I see you said 36 megapixel photos, these are relatively large photos, which will require lots of CPU speed (and GPU if enabled).

3. I do basic editing to each image (colors, light, adjustment brush etc.)

This could be the problem. Using large amounts of brushing is known to slow Lightroom down. You have all the symptoms of the problem caused by lots of brushing.

5. Most images don't require blanding so at this point I convert them to JPEG, and reduce the size to 4672 pixels. This, again, takes time (I didn't measure) and takes resources from the computer (CPU? GPU? RAM?)

I guess this step doesn't seem necessary to me (and I also don't recognize the word "blanding"), and in my mind, this entire step is an unnecessary waste of time. However, anticipating that you have a valid explanation for why this is needed, the speed of converting to a JPG is entirely based on the CPU, and as I said, if you did a lot of brushing, it will take a lot of time.

7. After processing this way a couple of folders, with 20-30 images each, Lightroom slows down dramatically and I need to restart it, What slows down? Pretty much everything. Going through the images, editing some more. I often see a white screen for a few seconds, especially while Lightroom is converting about 10-20 files to Jpeg. But also after this task is completed, then re-editing some of the images can be really slow.

Brushing! It slows Lightroom down. If you are doing a lot of brushing in Lightroom, this is most likely the problem.

Instead of doing lots of brushing in Lightroom, do it in Photoshop; or if you must do it in Lightroom, turn off the GPU acceleration (Preferences->Performance->uncheck "use graphics processor"), do the brushing before you turn on the lens corrections and transforms, and if possible, get a faster CPU.

bmeiriAuthor

Known Participant

1. I didn't realize that brushing slows down Lightroom. I find it to be one of the most useful features in Lightroom editing..

2. Sorry, I meant "blending" and not "Blanding".. I used to open the DNG files in Photoshop, then edit and save them as TIFF (16 bit) and then convert them to JPEG so that I can deliver them to clients. But I found that opening 10-20 images at the same time works better if they are JPEG. But then I lose time by converting them all from DNG to JPEG. Converting from TIFF to JPEG seems to be working much faster and consumes less resources from my computer

3. Brushing in Lightroom is a lot easier than in Photoshop. I am assuming that you mean by applying the changes in layers and masking them out? How does turning off GPU help with brushing? Should I do ALL Lightroom editing BEFORE lens correction and transform?

4. Faster CPU? Is 4.2 not fast enough..?? What would you recommend? Is better GPU going to help at all? It is just easier for me to replace than a CPU

Thanks for all the help so far!

dj_paige

Legend

Exactly what functions in Lightroom are slow?

Mohit Goyal

Community Manager

Hi boaz_m,

Please refer: Optimize Lightroom performance also, are you using any NAS drive for storing images and Lightroom catalog?

Thanks,

Mohit

F. McLion

Community Expert

... you using any NAS drive for storing images and Lightroom catalog?

Mohit,

The catalog can not be stored on a network drive ..

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