Lightroom 2015.6 Extremely Slow

Finally could not take it anymore...I reverted to the prior 2015.5.1 version via the instructions here and LR is usable again.  Adobe...you need to get off your XXX and fix this!

If you are using 4K display and having slow response and memory leaks try and reduce the resolution to 1920x1080. Everything will get much faster and more responsive. I would expect adobe to acknowledge they have a performance issue with 4K and are working on a fix and not leave us hanging to dry...

Lol lightroom is made to batch edit. 50 photos at a time all day long. Absolutely there is going to be a several second pause. But it shouldnt continue to eat up resources and cause the entire system to slow to a crawl and crash. I dont even understand how that is a response. If you google lightroom cc 2015 ram memory over usage or lightroom cc 2015 system crash youll get 20 or 30 threads right off the get go on this same issue. Macs are having the same problems that PCs are having. This is not a hardware issue, this is a software issue with Adobes released program. The nice thing about being such a big company is that you dont have to test your software all the way through, you can release it and let the users find the bugs for you. In the mean time were stuck with what we have. So keep filing the error reports with Adobe and patiently wait for them to come around fix this horrendous problem...
The sad part is that we keep thinking that its something we did. After we put so much money into our systems to ensure that they are running top notch hardware the bottleneck ends up being the software. Of course theyre aware of the problem, theyre just trying to figure out how to release an update and not look like goobers doing it. All of the tech guys that keep posting and saying theyre trying to help us absolutely know what is going on ... theyre just holding our hands getting us too look in a different direction while Adobe pulls its pants back up. Lol if you google the threads for this problem there are multiple Adobe reps repeating the exact same thing and everyone is having the same problems. Do you think for a second that the company doesnt know what is going on ...

Good News - this issue has been fixed in 2015.6.1 just worked with it for about 20 minutes and it is looking good. thank you adobe!
http://blogs.adobe.com/lightroomjournal/2016/07/lightroom-cc-2015-6-1-now-available.html

adobe has not recognized this problem. i dont think the current platform is capable, its old and till the move to a new base, this is it. though they keep adding features (stupid)

I can agree with "LR is extremely extremly slow". I tested with different PC hardware and with different LR versions. I can say:

1. LR/Camera Raw has definitive a performance problem with some - especially my high-quality – PCs!
2. I can reproduce the problem and I can demonstrate that the problem on other - especially my weak – PCs not persist or is not so strongly.
3. With GPU on the problem increase drastically!
4. Camera RAW from Bridge and Photoshop have the same problem.
5. With higher lightroom version the problem increase! Also with the newest 2015.6.1!
6. Camera Raw Cache amll/big. No difference.
7. Minimize LR, not helps or helps only minimal.
8. Downgrade helps a little, but not eliminate the problem in general.
9. Restart LR, helps but restart LR every X images are not a good workaround!
10. It is very frustrating that with LR my weakness machine is better than my best PC!

Please see this: https://forums.adobe.com/message/9011357#9011357 and let me know if you agree or not and if you have similar experience.

Same problem here. i just updated my computer to this and still Lightroom CC 2015.7 is very slow
Windows 10 Home 64-bit
Intel Broadwell-E i7-6800K @ 3.40GHz
G.SKILL RipjawS 4 DDR4 2400MHz, 1.2V / 64GB
4095MtNVIDIA GeForce GTX 960
Working also with SSD hard drive.
Resolution is 2560x1440 with 27"
Have tried all kinds of resetting and different settings but still no help :(

This reply was created from a merged topic originally titled Lightroom CC 2015.07 speed issue.

I've got LR CC on two compters both are very strong spec. On both previous version work much faster. 2015.07 is a DISASTER!!!!
Every thing is unbelievable slow. I want to get my money back for this month!! And as long as this issue will not be fixed!

have same problem / i7 6900K / 32gb ram / intel 750pcie SSD / 4K display / 1060 Gpraphic

Facking slowly !!!!!!!!

Adobe Expert is realy idiots.

Now instal Capture One.

Adding my vote.  Updated to 2015.7 today and fell into this mess.  I've taken all day so far to edit one simple shoot - I'm losing time and money on this assignment and I'm not happy.  Disabling teh GPU and switching to smart previews has sped some things up, but a simple JPG export is taking 10 seconds .. yeuch. 

This is insane:
We pay great sum of money per year for (complete) Adobe CC, yet we need to have up to three version of each of program installed to get work done, fiddling with every dot update, rolling back, finding solutions for unsolvable problems (like ongoing Adobe's performance issues), dealing with bugs, hanging here on forum for days and wasting our creative time... this is nuts. We pay for solutions not problems resolving opportunity; we pay for someone ELSE would do all the testing and taking care of ironing out problems instead of us. I'm sick of it. No matter how fast the PC u upgrade, same performance. And new and new problems. We just need reliable tools, not new features every fortnight that we do not use anyway (HDR, panorama, dehaze)... since they are so fundamental that rarely give any usable result.  

So for any serious work we need external solution enyway that we pay separately. Instead of adding thoose "consumer" features, they should fix Lr to reflect edited TIFF without restarting Lr and / or non-stop syncing folders. Or to fix shifted colors on Lr mobile here and there every 10th or so image uploaded. Or solve problem with cache where 99GB of cache on SSD did not solve problem of lag "building up" after a while and frequent restart needed. That the catalogue backup that fails for unknown reason every other ween and refuse to bkcup for few days than it'sd ok again without any user intervention. Than ultra laggy and fundamental spot remuver, which is just that - a (1) spot remover. And image quality process was not improved over 4 years now and most top solutions are ahead already... fix that instead of giving new import dialogs and features that we do not use (stock photo upload...?).

It seems Lr lean toward consumers... we need to look elsewhere. But where... :(    

I've started to try other RAW processors. Find Capture One much faster and get much better color. LED light lightoff less blownout.So testng in progress. Also next month ON1 will come out so I will try it also. What hold me in Adobe? you will be surprised.  Plugins. very cheap morgify and Aslo HDR and Panoramas modes. Please Adobe Make some big progress as lot of other companies left you behind in main part.

I put hopes on new ON1 RAW... they promise unmatched performance and no new catalogue need. It seem they adressed our issue of havig images in Lr ecosystem. They can operate s Lightroom plugin or standalone. Yet they give us 5 machines licence for 120 (curently discounted to 100) and licence is not subscription based. You OWN IT!