P: Slow UI when using Mac and Custom Display Profile

Hi Rikk

I am quite dissapointed at how Adobe is handling this situation.  Upgrading to V10 has cost me weeks of lost productivity.  I kept searching for a solution and then finally stumbled upon this post addressing the issue.  Lightroom has become unusable for me -- as someone else mention -- I wish we can send a video showing how incredibly slow the UI is.  You should work this slow and see how it feels.

Your suggestion of changing the color profile does solve the speed problem but I would think that a massive company the size of Adobe realizes -- that color is critical -- changing the color profile to see incorrect color is good for what????

Finally, I took up your suggestion of downgrading -- well you omit one CRITICAL piece of information -- the database is already upgraded to V10 and V9.4 Lightroom can not open it.  So again -- what good is the downgrading suggestion?  I have 400,000 images -- I should start again?

Dan Kosmayer

Yes, same here soooooo sloooooowwwwww

Has anyone had problems with the cloning tool?!?! It is also painfully slowwww. Ugghh!!!!

Just out of curiosity, I created a new catalog containing less than a hundred 12MP DNGs with standard previews to see if that makes a difference - it does not. The issues are the same compared to my main catalog that contains nearly a hundred thousand images. So this bug appears to have nothing to do with the size or the age of the catalog...

Since upgrading to Lightroom Classic v10.0. Not building smart previews, follow directions to build smart previews tells me smart previews built yet shows me smart  previews not built? Forever to load, presets may or may not work (depends on how long you want to wait). Switch to edit in topaz, save file, may return may not. Same with other programs. Freezes. Sometimes brushes work. Sometimes not. OR maybe I didn't wait the hour or two to find  out? In other words, damn near everything, everyone else has mentioned. Go to fixes work around page (Wait? Long time subscriber not employee???). Sometimes shut down and reboot works, sometimes not. Other programs work. In other words this is not a hardware problem (Imac updated) it's damn buggy software.  I'm not a programmer, I got no clue. I just pay for something and silly me, think it will work.

Yes, ugly if the actual calibration is far from sRGB. Useful to know it helped. What about going to old profile with lower resolution on the display?

Yes I've tried that. It does help some, but it's still slower than it was before the update. Also that color profile is 🤮

@Charity Parrish What resolution are you driving the display? Has setting the system preferences>Display>Color to sRGB sped up the editing? 

I'm having the same problem but on a 2018 MacBook Pro. Not only scrolling is slow, however. Edits are lagging terribly. Specs as follows:

Mac OS Catalina version 10.15.6

16GB RAM

Processor: 2.2 GHZ 6-Core Intel Core i7

Graphics: Radeon Pro 555x 4GB Inel UHD Graphics 630 1536 MB

On my side (Mac Pro 5.1 2012, OS X 14.6, Radeon RX 580, Asus Pro Art 32" display max @ 3840x2160 but same problems @ lower res + Apple Cinema Display 24", 64 Go RAM), switching to any sRGB profile I have resolves this problem. And the troubles come back with more or less seriousness using home made profiles, Abobe RGB 1998, Pro Photo RGB, Wide gamut RGB. It does not seem related to the ICC version (2.x or 4) nor to the availability of standard / 1:1 previews. Everything is fine in the Develop module (including browsing) whatever the profile and with or without dynamic previews.