P: Slow UI when using Mac and Custom Display Profile

I have an I Mac 19,2 Quad Intel Core i13, 8 Gb. Since uploading the new Lightroom upgrade if I try to open the old catalogue that contains 2000+ images. My computer freezes and shuts down. I also noticed ! mark beside at least half of the old catalogue, even though I am accessing images from my external hard drive. Lightroom worked perfectly fine the day before the new upload. I can work in the new catalogue by uploading images I would like to work on.  The forum replies are mostly in computer speak that many techies will understand, I am not one of them. Please could you help and reply in plain simple language that anyone can understand.

I tried that too, it did not work. What does work is using the generic sRGB screen profile which of course it not viable when wanting color calibration. 

As an adobe administrator Rikk do you know close to a fix adobe is with regards to this bug? For many of us it clearly seems to be related to profiles. 

Same problem for me (Mac Pro 2012, 64Go Ram, Radeon RX 580, OS X 14.6). Very slow in Library mode using personal ICC profile or even Adobe RGB 1998.

Definitely faster by using any sRGB profile such as sRGB IEC or Epson RGB or Generic.

I went back to an older version, and then updated to 10 again. The problem seems to be fixed. 

I tried this - to no avail, unfortunately...

*Ron_Pfister  - Performance also OK when using sRGB display profile, but that's a non-starter for color-critical work (and color-critical work ist pretty much all I do in LR)

True but that's not really the point. Some are not having ANY issues with display profiles (like me). Others are and the switch fixes the issue and if that IS the case, now it would be darn useful to provide full system info and hardware so Adobe can figure out why switching to sRGB works. This isn't a fix, it's part of an investigation. You can switch back and forth of course, but at least having more data as to which systems are affected make fixing the bug, and it is a bug, easier. 

*JohannvS   Apologies. This was merged into the wrong thread. This thread is about Mac. 

For your specific case, on your machine that is misbehaving:

• Clean Lightroom Install Procedure
• Close Lightroom
• Restart the computer
• Use the Adobe Creative Cloud App to uninstall Lightroom
• Restart the computer
• Install Lightroom via the Creative Cloud App without launching any other programs.
• Restart the computer
• Launch Lightroom
• Wait 5 minutes

Then: 

A Preference File will survive a Lightroom uninstall/reinstall. Sometimes weird behavior is corrected/cured by resetting the preferences.

Reset Procedure:

1. Close Lightroom.

2. Hold down [Alt/Opt]+[Shift] while restarting Lightroom.

3. Overwrite the Preferences when prompted by the dialog.

4. Close Lightroom.

5. Restart Lightroom.

Does the behavior continue after resetting the preferences?

Another data point:

MacPro5,1

12x 2.66GHz

24GB RAM

Radeon RX 580 Pulse 8 GB

Two Quato IntelliProof 300 EX 30" displays @ 2560x1600

Mojave 10.14.6

LRC 10.0

Symptoms:

- Painfully slow in grid view when using custom or Adobe RGB display profiles

- Disabling GPU-support makes no difference

- Performance OK when using film strip, but that's just not workable for me when browsing hundreds or even thousands of images

- Performance also OK when using sRGB display profile, but that's a non-starter for color-critical work (and color-critical work ist pretty much all I do in LR)

Adobe, please fix this ASAP! Reverting to version 9.4 is not an option for me because I've made lots of edits during the first run of 10.0 when performance was a bit slower than 9.4 but still useable. Now it's no longer useable.

I'm happy to share display profiles with Adobe Support if that's of any help.

TIA for fixing this soon,

Ron

This update has been terrible it’s slowed down my processing time badly.  I’m NOT happy . I hope you’re on with fixing the problem.  😞 😞 

Thanks for the help. At the moment I am using my MacBook which works and am waiting with crossed fingers for the bug fix for my main computer