P: Slow UI when using Mac and Custom Display Profile

@Adam Crowe yes, I've put back my custom profile and have no problems with local adjustments on an iMac Pro and the MBP 16" - just finished a batch of editing.

*SydLow Are you affected by the sRGB issue with the Library module?

I tried to apply a simple local adjustment brush with only exposure change on it. After about three seconds, the Mac Pro went into about 10 minutes of "spinning beach ball" during which the OS was completely unresponsive. I couldn't Cmd+Alt+Esc or switch between apps. During this time, Lightroom switched a few times on its one between the Develop module I was on and the Library for reasons best known to itself. And then after those 10 minutes, without refreshing the screen, out of nowhere, the macOS login screen appeared. Somehow macOS had rebooted by itself and it wasn't even visible.

@Adam Crowe what kind of local adjustments? I'm applying graduated and brush, no freezes yet.

Do not update to 10.1 if you are experiencing the custom color profile issue!!! This 10.1 version has an additional bug with the local adjustments that freezes the whole app. It's really really bad.

Of course, right after I entered the above, the update came thru for me. 

Thanks 

No, it's release version. see attached.

Are you referring to the beta as it hasn't shown up for my system? 

LR v 10.1 is out - I'm seeing improvement in Library mode with a custom monitor profile. This is on a 2019 MacBook Pro 16"

I doubt it would make any difference but has anybody tried resaving their custom profile as sRGB? You would probably need to rename the internal names as well.

Mac 5,1 with Radeon HD 7xxx 24GB Mojave 10.14.6 same issues as everyone once upgraded to 10.0

I was able to speed things up by selecting the sRGB profile for my PA329C, but obviously not ideal.

I am using a secondary display and it too was unusable until I also set that to sRGB.