P: Slow UI when using Mac and Custom Display Profile

hi

i also noticed the same kind of behavior here.

in fact the lagging reduces when I change the scale of my 16” Mac book pro display (I use the smallest available scale Allowing more information). it is better at default for instance which way too big for me (menus and fonts)

note that changing to srgb as a turnaround has little if not any effect  

Julien

Ok thanks. Seems profile plus display resolution play a role. Good info.

Andrew: 5120 x 2880 (Default)

If you lower it does it help the issue?

Andrew, I am still familiarizing myself with how the iMac/Catalina handles the Retina display resolution.  I had been using the "Default" resolution, which "Looks Like" 2560x1440. 

Using the i1profiler custom display profile, if I lower it to 2048x1152 it is still laggy, but is better once I lower it further to 1600x900.

Using the sRGB profile the performance is acceptable up to 2880x1620 and then starts to deteriorate again at 3200x1800.

I am judging this purely subjectively based on how smoothly the catalog grid scrolls with Lightroom at full screen at the specified resolution.

I also have 2 monitors and have Lightroom maximized on one. 

I caused a similar problem for myself last year but it was only when I used a tool, not just clicking on it. I moved the images folder to the Google Drive folder. As each adjustment was externalized to the Lightroom catalog and the XMP file, Google locked the files until they were uploaded to the cloud.

But I can't think of anything that would cause a delay from just selecting a tool for use. 

This is a real stretch. In the very early days of Microsoft Word, the first use of a feature caused a delay while that component was loaded. Because computers didn't have much memory, this was a common architecture but I'd be surprised if Lightroom was architected like this. 

Feel free to what you want to clean... I do not mind... 

Cheers Tom

Thank you for your answer @bill_3305731 , I use no plug-in at all in LightRoom.

I'm not sure I have the same problem as others in this discussion cause my gridview works pretty well. Lightroom is slow in photo editing mode. Each time I click on a tool it takes around 5 or 6 seconds to react, and the same when I unselect the tool.

Also, I have 2 monitors but only use one in LR (no secondary display enabled in LR).

I'm happy to hear it works for you, too. One of my main reasons for using a dual-display setup is that it does away with the need to leave the develop module to access grid view...

Yes, it's a great workaround.  While I still see spinning beachball in library module when I select an image and for that image to appear on the main window which is on the 4K display, I don't use library module functions that much on the main window so this workaround is great.

Likewise, it works well when I need to use the main window while in the library module such as editing keywords, publishing on online gallery through plugins, or even selecting folders in a catalog, I can bring the main window over to to secondary display that is set to sRGB. 

It's a slight inconvenience but I'd take that extra step than to see spinning beachball at every turn.

My pleasure! Thinking a bit further, this may also be a solution for all those who don't normally use a dual-display setup but who have the desk space available for an additional display...

@soundrats @bill_3305731  I would like both of you to clean up your posts.
Personal attacks, name calling and the like are not tolerated here. If you cannot keep it civil, there are other places on the internet that will welcome you.