P: Slow UI when using Mac and Custom Display Profile

Same issue on my MacBook Pro 2018. LRC 10.0 is very slow. Scrolling is slow and also combining several photographs to a panorama is dramatically slow. Scrolling speed seems to improve, when display profile is changed from default settings to AppleRGB. However, as I would like to stir to my default color profile, I downgraded to 9.4.

Hope this will be fixed pretty soon.  

Thanks @chico11 .  If engineering requests additional profiles I will reach out to you.

This is the list of video cards https://support.apple.com/en-us/HT201805

At least the ones that will give you a boot screen.

I am running a AMD Radeon HD 7950 and it supports the boot screen.

@hursey  

I'm not questioning whether you need RGB, but.

I was a fanatic about always using AdobeRGB until I noticed that for my final presentation, I couldn't see any difference. Whether professionally printed or viewing on my QLED TV, no difference. Until I gave up on it due to continuous driver issues on Windows (works fine on a Mac), I could see subtle differences between a HP 5K RGB monitor and my current Benq and Dell sRGB monitors but the differences were subtle and didn't apply to all images. 

Sometimes that we worry about things that in the long run, don't matter. 

Aside: several years back, I did a shoot for an art director who insisted on 50MP files. So I up sized some files from 12MP and he couldn't tell the difference. Never found anyone easier to fool than an art director. At the time, the only cameras delivering 50MP files were medium format where a body and set of lenses would have run over $100,000; not in my budget nor was a photographer who used that kind of gear in his.  

Thank you  Bill

I'll  check them out

Caveats first, sources below so you can skip my preaching if you wish.

First understand that there is no way to do an overall meaningful benchmark for Lightroom because of the different ways that people use it. For me, Develop is of primary importance and I don't care whether import or export is fast. Others are extensively using presets, plugins and so forth. The monitor resolution and color depth matter as does the size of the files and whether they are RAW or JPEG. Even similar sized files from different camera brands can matter. 

Also some features make little or no use of a GPU. GPUs are not unconditionally faster, sometimes much slower. So the benchmark folks mush together a bunch of features which applies to nobody but gives a reasonable overall feel of how Lightroom works. 

There is also a difference between what a measurement sees and what a human sees. On an otherwise exactly identical machine, I upgraded from a Quadro K1200 to a Quadro P2200 which is 321% faster. Could I see a difference? No. Could I measure a difference? Yes but not 321%, maybe 10%. 

So for what it's worth:

• Pugetsystems.com has the best Lightroom specific benchmarks that I've seen. Plus you can download the images and run your own tests though of course, just with your equipment. Because of their tests, I bought the P2200 (my machine came with the K1200) instead of the almost twice as expensive P4000.
    
• PassMark GPU Compute Benchmark Chart - more an engineering benchmark but still somewhat useful for Lightroom and Photoshop. Just search for the full name to find the latest version. Current link: https://www.videocardbenchmark.net/ 

Not sure either, but it worked for me. I even ran several calibrations and all the new ones work, but none of the old ones except for the stock sRGB.

I tried recalibrating and no improvement, but switching to sRGB does resolve the speed issue though not the usability issue as I need calibration to do the work I do.

I never tried creating a new monitor profile. I wonder why that would make a difference when that last monitor profile caused a slowdown.

When I ran my color profiler (ColorMunki) after I installed LR 10, it all works out just fine.
The only two profiles that work for me are sRGB and the newest one I just calibrated. Try running a new profile with your calibrator.