Could you please go to the root user account and let us know how lightroom performs in that account?
Please give me step by step instructions on how "to go to the root user account" in Mac OS Sierra. So far as I know, root user is disabled in modern Mac OS by default, for security reasons. It is not recommended to work under root account.
If you mean the admin user, though, then I am working under user with admin rights.
- From the Apple menu choose System Preferences.
- From the View menu choose Accounts.
- Click on the lock and authenticate with an administrator account.
- Click Login Options.
- Click the "Edit" or "Join" button at the bottom right.
- Click the "Open Directory Utility" button.
- Click the lock in the Directory Utility window.
- Enter an administrator account name and password, then click OK.
- Choose Enable Root User from the Edit menu.
- Enter the root password you wish to use in both the Password and Verify fields, then click OK.
How to log in as root
- If you are logged in, choose Log Out from the Apple menu.
- If you are logging in from a list of usernames with pictures, click Other.
- In the Name field, type: root
- In the Password field, type the password you defined when setting up the root user account.
Thank you, Sahil, for the information. I might try this some day when I have free time and wish to tinker. However, I did not pay for LR subscription to tinker with settings. Nobody is going to use LR under root user anyway. My setup now is pristine clean install (not upgrade) of Mac OS Sierra, with minimum third party software. I fail to see how testing under "root" user can be relevant in my situation. If LR is capable of improved performance under root user then it is time for Adobe engineers to get back to the drawing tables and make that miracle happen for regular user accounts in Mac OS, since this is how LR is supposed to be used!
By any chance do you have lightroom sync turned on in lightroom?
no, I do not use mobile sync.