P: Quick Develop VERY slow on my system (6 sec vs 1 sec in LR 5.7)

I just wanted to throw my hat in the ring and let the lightroom developers know that I've also experienced significantly slower previews since joining the LR CC. I've tried rendering the 1:1 previews which works great for culling through the library and trimming down wedding photos, but once you switch to the develop module all hope is lost! While the "loading" wheel spins, I grab coffee, update my facebook status, and practice meditation. In a year or so I should have the wedding edited.

Hi there,

I'll try to share some details. LR CC here is very slow compare to the 5.7.
I first tried to disable GPU but as the slowness is in every module, it doesn't change anything.

I use LR in full screen but when I switch to a different app (let's say safari as I type this post), windowed, on top on FullScreen LR CC, this one start to blink (especially the module menus on the top-right). Note same behavior with Lightroom in windowed mode. There are some display events that are slowing down (locking) the other component of the software.

I was lucky to being able to record it:


When move the cursor, it is so slow I have a lag of 1-5 sec before the cursor moves and of course, the photo area to display the changes only after those few seconds.

Configuration:
i7 quad core - 8 GB - MacMini - Yosemite 10.10.3
Single monitor, 1920 x 1200 - HD Graphic 4000

Instead of blaming our systems, fix LR.

Yep, me too. if not fixed soon I'm going to stay on LR 5.7 and cancel my CC subscription.

Here's an idea: Why doesn't Adobe FIX THE ISSUE since it is obviously occurring on both platforms (PC and MAC)?
I just doubled my RAM yesterday (to 16gb) and it's still quite slow. I stopped using a dual monitor setup and that didn't even help.
Render times are 10 times longer than they were on 5.7, and yet here I am stuck paying for a subscription to Lr CC and Ps CC.
Sorry if I seem a little angry here, but I wasted 2 hours on the ADOBE Help Chat with someone who barely spoke English, and rather than actually HELP ME he continually posted links to Forums I'd already read.

I'm back on LR 5.7, LR CC is just Too Slow.

This did bring the speed down from 9 seconds to 6 seconds, some improvement for sure, but still exponentially slower than Lightroom 5. Thank you very much for this suggestion!

On Windows, try changing your shortcut to start with LR with a lower CPU priority:

So instead of the shortcut target being just this:

"C:\Program Files\Adobe\Adobe Lightroom\lightroom.exe"

Make it this:

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

With the theory being that the main LR process may be getting in the way of some other processes that are causing it to slow down and making LR lower priority will allow those other processes to speed up. It sounds counterintuitive but it can help in some situations.

The one thing you lose with this altered shortcut is the ability to drag-and-drop to LR to start an Import. So it's worth having another LR shortcut that is the normal one for when you want to do that.

In your case the issue is WITH import, so you'll need to be initializing the Import differently than drag-and-drop.

Another idea would be to turn off the GPU in case DNG Conversion rendering the preview uses it, although I don't think it's supposed to.
--
Finally, if you don't convert to DNG in Import, can you do it afterwards, and have the two steps be quicker in total? I'm not a fan of converting to DNG at all, since it makes the files unreadable by non-Adobe software, so don't have personal experience with doing such, and may be I'm imagining things that aren't possible.

it is off for me, still 9 seconds per standard preview

If Face Detection is on, turn it off.