Lightroom 2015.6 Extremely Slow

Hello

What size previews are you making and have you considered making much smaller ones to see if things are better? There is most probably a big problem with Lightroom and larger size previews. If you have 1920x 1200 previews as I use, I have few problems, 1:1 zoom in 5 or 6s and a similar time to create them.

MDE

Hello

Well it is a 6 year old computer with 16gb of ram and slow at it might be, it works!

It is not a problem, it is just my hobby. I can also do a lot of cloning, slow as it is

MDE

Hello

As a postscript, there is a colour difference between the two, as the top is an export and the bottom a screen grab.

MDE

Hello jeckylproductions

You still have not said what size previews you are using. It might be very important to give Adobe a clue. Have you tried much smaller previews like 1440, just as a test. Make a test folder with 50 images and try smaller previews till you get an acceptable performance.

There is obviously something seriously wrong with how Lightroom works on some computers.

MDE

Hello

Thanks for the reply.

2048 is not very large for a preview, I use 1920x1200.

I don't generally use GPU. In my system the GPU makes panning at 1:1 quite smooth, but the actual redraw is slower. Also all the sliders are really notchy and results in an overshoot.

Without GPU panning can be smooth, but mostly very notchy and clicking on another image can take quite a long time to change whilst panning. The sliders are smooth and there is no overshoot. This pretty well the same behaviour for all the versions of Lightroom 6, but 6.6 is slightly worse.

I don't have CC so I can just go to the Adobe site and download older versions. I have not gone back to 5.7, even though I have it. The GPU would not work with 5.7

https://helpx.adobe.com/lightroom/kb/lightroom-downloads.html

This links to previous versions of Lightroom

MDE

Hello

I have started this topic, you might be interested in

https://feedback.photoshop.com/photoshop_family/topics/why-does-lightroom-use-so-many-resources/edit

There seems to be a lot of problems concerning the performance of Lightroom 6.6

At the moment I am on Lightroom 6.5 standalone.

I use Win 7 pro on a 6 year old i7 870 Quadcore with 16gb of ram, a Samsung SSD and a AMD 5450 video card

I have just done a small experiment.

With just Windows running the resource monitor shows that the ram in use is 2354mb

I created a new catalogue on the SSD. Cache 100gb, video cache 10gb

The ram in use went to 2633mb

I added one Canon 5D3 image to the catalogue and created a 1920x1200 preview with high

quality.

The ram in use with no edits went to 3585mb

Now the 1920x1200 preview at 16bit should be about 13mb

So why has the addition of just one image to the catalogue increased ram usage by 952mb

Using Develop and no edits I zoomed 100% and panned the image about.

This was smooth, but the ram usage went to 4371mb, an increase of another 786mb.

This one image takes up 1738mb

Now I did some edits in exposure, clarity, vibrance, lens profile and auto upright, zoom to 100% and panned again.

Ram use went to 4606mb, up another 235mb.

That is a total of nearly 2000mb for one 13mb image.

Now I added 7 100,75,100 clones, zoomed 1:1 and repeated the panning.

No GPU the panning was very smooth and redraw was pretty instant and no CPU thrashing, which happens in my normal catalogue.  

Ram uses goes up to 4919mb

That is with cloning and the above processing, ram use for one 13mb image is 2286mb.

This the memory usage in Sys info

Built-in memory: 16374.1 MB
Real memory available to Lightroom: 16374.1 MB
Real memory used by Lightroom: 1902.2 MB (11.6%)
Virtual memory used by Lightroom: 1947.2 MB
Memory cache size: 276.3 MB

Quite amazing.

MDE