Terrible performance in LR - Fantastic in PP. What gives?!

[Phlanker]

Would love some help with this folks - and yep, I've done everything the FAQ's suggest to increase performance in LR - and now I'm asking the brains trust to see if there is something simple I'm just not seeing.

Computer Specs:

i7-6800K running at 4.0Ghz. (yep, 6 cores)

32Gb DDR4 3200mhz RAM

512Gb M.2 Samsung 950pro SSD (as OS, Adobe, import and edit drive)

GTX1080 6Gb VRAM

Windoze 10.

Have 75% SSD free,

LR only utilising 8Gb Ram (of 32 available),

task manager is only showing CPU utilisation of 30% when using lightroom heavily.

Nil open in the back ground.

Catalog size is only 3000 images and was optimized today (and every week previously)

SSD is defragged every week.

Symptoms: will have an image open in develop pane, click right button on keyboard, wait 3 seconds, next image loads.

Loading full images, (not small), have smart preview on, and I am utilising the GFX card for assistance and it's still this slow.

Adjustment brush is unusable because of the lag.

In retrospect, I booted up my old 2009 Mac Pro (quad core Xeon , 6Gb Ram etc.) and it takes about a half second between images...

This is really frustrating as I'm sure you can imagine, and I'm just about done with the Adobe suit because of this issue - that said, I do video work in Premiere Pro and Ae and they're both blazingly fast. It just seems to be an issue with LR.

HELP!!!

Thanks folks

Wes.

[Just Shoot Me · Accepted solution]

6 core CPU.

[Geoff the kiwi]

Try limiting Lightroom to 4 cores, there seems to be an issue with larger amounts that is unresolved..

[F. McLion]

For testing use the Task Manager to limit the Lightroom process to a lower CPU count.

For a permanent solution use start /affinity F lightroom.exe to start LR.

[Phlanker]

So it seems the 6cores are the issue. Any plans for Adobe to fix this?

[F. McLion]

Plans? I assume sure!

When? Nobody knows, and they don't tell

[johnrellis]

For testing use the Task Manager to limit the Lightroom process to a lower CPU count.

I think it's possible that using Task Manager to limit the number of CPUs could give different results from "start /affinity".  At startup, LR may record the number of available CPUs and use that number for the rest of the session; LR may not notice if you change that number with Task Manager later in the session. 

[bob frost]

I have a shortcut to LR on my desktop, and I altered the 'Target' line to the following. That only allows LR to use 4/8 cores, and the other 2/4 cores of my 6/12 core cpu are just available to the system and other programs.

C:\Windows\System32\cmd.exe /c start  "lightroom" /affinity FF  "C:\Program Files\Adobe\Adobe Lightroom\lightroom.exe"

Take note of the spaces between commands.

Bob Frost

[Jeffb2009]

but should we be having to throttle our computers back?? Really??? what a joke

[johnrellis]

Make sure you add your me-too vote and details of your configuration and performance issues to this bug report in the official feedback forum: Lightroom: Slow performance on Xeon CPUs | Photoshop Family Customer Community  (the title says "Xeon" but the topic is really about large-core machines).  This forum is a user-to-user forum in which Adobe product developers rarely participate, but Adobe does pay attention to the feedback forum.

[iMerica]

People pay monthly subscription for these products, and it turns out they're not cutting edge software on the market..

[Alex Petrenko]

There is no expectations for cutting edge. We just expect it to be reasonably mediocre already.

The day Capture one introduce proper jump between C1 and Photoshop will be my last day of using Lightroom. Though, I will still pay for it as a part of Photographer bundle.