Creative Cloud Libraries upload is unreliable and consistently fails/breaks

I'm in the process of testing whether we can house our image libraries on Creative Cloud libraries for our designers and editors to easily access.

Let me tell you, the test is not going great.

I've been uploading images in batches (per shoot - about 100 images at a time, some JPG some TIF), then waiting for Creative Cloud to show 'File Sync: Up To Date' before uploading any more.

I uploaded about 10 shoots worth of images. According to Creative Cloud, all complete. However, if I login via the web, I could only see four images and none of the extra groups/sub groups I created. Likewise, other creatives in our team could only see the same four images in their libraries. I noticed that despite Creative Cloud showing File Sync: Up To Date multiple times over multiple days, if I closed and opened the software, it would start the sync again, all the way to 100%. This resulted in no actual change to the contents of the libraries however.

So, I uninstalled Creative Cloud and all the Adobe apps, ran the Creative Cloud cleaner tool (which by the way didn't remove any of the actual library content), reinstalled and started again.

It worked for a bit, but now the same problem has come back.

Is the Creative Cloud file sync/uploader broken? Incapable of handling multiple files? Is this related to my account only? Adobe support have suggested a bunch of things, none of which have worked and all of which were basic troubleshooting steps I'd already tried.

Creative Cloud Version: 5.10.0.573
Computer: 2019 Macbook Pro 16" i9

MacOS Version: Ventura 13.2.1