Stumped! Suddenly FCPX File Sharing never gets past 0% on ANY file export, ANY library

Google's nasty keystone software is installed. It can overwhelm and break the Video Toolbox. Follow the instructions at https://chromeisbad.com to completely remove all the keystone files scattered across the drive. Once that's done, drag FCP to the trash (don't empty it) and re-download FCP from the App Store.

I sorta recall that homebrew might have been involved in a previous FCP problem, but I think the symptoms were different. Just thought I'd mention it since you have installed some databases via homebrew. (I prefer MacPorts because it stays in its own /opt/local sandbox.)

Others may see additional items.

The etrecheck report is anonymized so no personally identifying information is included.

EDIT: Just noticed that you have Security updates disabled and a number of configuration profile entries which could be a sign of malware. You should consider enabling Security updates and running a MalwareBytes scan to see if something's amiss.

Also, sitting here thinking waiting on a render, when FCP's export is stuck like you mentioned, have you taken a peek a Activity Monitor's CPU usage to see what FCP or anything else is doing during this time?

In Activity Monitor you can click on Final Cut Pro, then the little circle "i" button, then "Open Files and Ports" and see if it's stuck on some file or volume. It may be a long, long list but can be helpful sometimes scrolling through it.

I'm not sure how comfortable you are with the terminal but while an export is stuck you could run:

sudo fs_usage -w -f filesys Final Cut Pro

and/or

sudo fs_usage -w -f Final Cut Pro

(you'll need to type in your password) then hit return to see what FCP is doing or think's it's doing during one of these 0% exports. Sometimes I find this to be really handy in determining what's going on.

Tap Control c to stop the fs_usage process in the terminal.

Another tool is sc_usage which you could run while an export is stuck.

You can look up the PID number for Final Cut Pro in activity monitor then use that number like this in the terminal:

sudo sc_usage 2501

(your PID number will be different for Final Cut Pro) then hit return.

tap the q button to quit sc_usage

If you're curious what these do exactly, in the terminal type:

man fs_usage

or

man fs_usage

then hit return to read it's manual. Tap control z to exit the manual.

It's kind of amazing how much computers and applications are doing under the hood while they look, to us at least, like they're doing absolutely nothing.

Etrecheck is a diagnostic utility by a respected member of this community.

It is used many times here every day to let those who are trying to assist know about possible software issues in the affected user's Mac.

You can download Etrecheck from its website https://etrecheck.com.

Run the application, and it will produce a report on your setup.

Click Share Report->Copy Report, then you can post it in a reply here using the "Additional text" button under the message address here. 

If you migrated your User data and Applications from an Intel machine, then I think backing up, wiping and re-installing just the User data would probably be best. In another post, Luis said that the latest macOS allows for much easier clean reinstalls. Found this: Erase and reinstall macOS - Apple Support

Only 12% free on an SSD is suicidal especially as the files are probably highly fragmented. I would move as much as possible to other drives if you can't delete any of it.

Have you tried a new test Library and project?

EDIT: A couple of years ago I was contacted by someone whose iMac had slowed to a standstill and was contemplating replacing it. Within a few minutes of the phone call it became obvious that his 3TB drive was under 10% free and the culprits were the massive ProRes render files. He took a few minutes to delete these and suddenly his machine was like a new one!

Good job troubleshooting this so far. Please run Etrecheck and post its full report here.

Use the “additional text” button and paste the report into the text box.

New admin user is a basic test which usually indicates there’s a software conflict in the primary user, likely the Google keystone extensions flooding the video toolbox while the export is processing. It’s basically malware that runs continuously.

Out of curiosity I'd run Black Magic's Speed Test (free in the App store) on the destination drive under your main account as well as under the test account and see if there's any noticeable difference.

I often run this test on drives clients hand me before working to see what exactly they put inside some no-name 3rd party SSD or HD case so I know what I'm dealing with before an edit.

Post another EtreCheck report. You can use the Additional Text button in the reply box to include the text.

Is there space on the destination drive?

Al

A test account that functions properly is also important info to share. I understand when a production machine isn't working properly it can cause all sorts of deadline stress, but we're all just users like you, volunteering our time to help others. If you look at the points that others have awarded to Tom for helping to solve their problem you can see he's a hero around here.

Have you tried creating a new short test project/library with fresh material to see whether the problem lies in your original library/project?