Lightroom Classic 15.4.1 constantly crashing and metadata not updating

Question

I was enjoying myself until two days ago when I upgraded LR Classic to 15.4.1 (which created a new catalogue). Since then it has been a world of pain.

It works fine for a little while. After some time, I realise that none of the titles, captions and keywords I’ve been entering for 15 minutes is being registered. Seems fine while I’m typing them, keyword suggestions would come up, and no warning when I press Enter. But when I return to them, they are all blank.
LR frequently freezes, requiring me to shut the program every half an hour or so. Shutting the program takes many minutes (spinning rainbow wheel).
Often after shutting the program, I cannot open it again (icon bounces in the Dock for a bit, then nothing happens, not even a start screen). I need to restart my computer.

Any suggested fixes? Or should I downgrade to the previous version of LR Classic (if that is even possible)?

My specs are:

Lightroom Classic 15.4.1
MacBook Pro with M1
OS = Tahoe 26.5.2
16 GM memory
880 GB of disk space
Image files stored on external SSD drive

Jason Miller234 · Answer

I had a similar issue after an update. It sounds more like a catalog or upgrade problem than your Mac. I'd try optimizing and testing the catalog, then create a new test catalog to see if metadata saves correctly. If the issue only affects the upgraded catalog, restoring a backup or rolling back to the previous Lightroom version is probably the safest option until Adobe addresses it.

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