P: Slow UI when using Mac and Custom Display Profile

@bill_3305731 As Lightroom exports at 8-bits per color channel, does it matter whether Lightroom is set to sRGB or RGB?

RGB what? 

sRGB is a well defined color space. RGB is a color model. 

I always assumed it was due to the monitors and that Lightroom didn't "know" the difference. 

All ICC aware applications are aware of a display profile that defines a behavior (a calibration if you will). The profile does as the name implies; profiles device behavior. 

Question 

As Lightroom exports at 8-bits per color channel, does it matter whether Lightroom is set to sRGB or RGB? Perhaps I'm not even wording the question correctly?

For several years, my monitors have been 10 bit, always calibrated and with about 75% RGB / 99% sRGB and when a bit flush, 99% RGB. While the differences were subtle, images on the 99% RGB monitors were usually superior when compared side by side with the lesser monitor.

I always assumed it was due to the monitors and that Lightroom didn't "know" the difference. 

Have I got this right or am I missing something (or even missing a lot)? 

Give it up.

A calibration of the display is not the same as a profile. It is no different than printing where calibrating a printer is not the same as a paper profile. 

A profile is built on top of that calibration, which should be a what software uses. The question in using sRGB will be how close it is to a monitor set to sRGB and calibrated. Obvoiusly not the same as profiling (custom profile) the sRGB calibrated monitor but is it close enough.

Probably most of use would prefer a wider gamut for photo editing and probably most of our monitors are wider than sRGB. 

https://www.amazon.fr/Etiquette-Dummies-Sue-Fox/dp/0470106727

@photostudiotnk Ok for first point, my error,

Not the first error. 

Or maybe you are not able to admit having made an error or a typo.

@photostudiotnk LR can take advantage of a calibration process, that produces a file that LR does not use. 

It's all here: http://www.digitaldog.net/ 

Read, learn, study. 

Again, contempt 😞

During your teaching, how would you explain:

LR can take advantage of a calibration process, that produces a file that LR does not use. 

This is in fact the only point that made me compare this situation with Voodoo and with a lot of smileys.

Regards

@photostudiotnk Ok for first point, my error...

Yes. 

For the second point, I  admit without any problem, that I can miss something.

Yes. 

So, LR can take advantage of a calibration process, that produces a file that LR does not use. 

Yes then no. 

You need book on basic color management and this one's perfect:

https://www.abebooks.com/Color-Management-Digital-Photographers-Dummies-Padova/30738434794/bd?cm_mmc=ggl-_-US_Shopp_Trade-_-naa-_-naa&gclid=Cj0KCQiA5bz-BRD-ARIsABjT4niBzEz1FKXAm_ussF_14kfWmNhTr-ZwzkDqTPPpHlUGv1vBe7L2R-AaAkbdEALw_wcB

Ok for first point, my error, LR can directly use the profile.

For the second point, I  admit without any problem, that I can miss something.

So, LR can take advantage of a calibration process, that produces a file that LR does not use. This is what you mean?

Regards