Since updating to 13.3, I am having several issues.

First, almost half of the location data of my 40K catalog (country, city, state, etc.) has been either erased or changed to a variant like México/Mexico. GPS data was lost for 3K images. LR on the cloud has the same missing/wrong data. If I correct them in LR Classic, it reverts to the wrong one.

Then it became very sluggish, especially when metadata reading/writing is involved like rating, library filtering, adding keywords, etc. When selecting Lights out mode, it does not work until I rate or edit a photo. Before this version it was instantaneous. Switching to develop mode takes about 3 seconds (it was less than 1 before) and advancing to next image takes 2-3 seconds as well, it does not matter if images are RAW or JPG.

I already stopped syncing, optimize the catalog, increased cache to 99GB, deleted sync files, deleted previews, and generated them again, reset preferences, uninstalled, and installed again, removed presets, even tried a new catalog. Nothing seems to work.

I noted as well that I have 1.5K stubborn images that I can’t save the metadata manually to disk. As soon as it “saves” it, it shows “The metadata for this photo has been changed in lightroom, save the changes to disk?”.

I have paused Address Lookup, Face Detection and write to xmp. Generate Previews in Parallel is checked. Use of graphic processor is on Auto. I tried all other modes with no change in performance.

All images are on a samsung T7 SSD attached on USB-C. The catalog and cache are on a mac studio’s internal SSD, M1 Max, 64 GB of ram, runing on sonoma 14.5. All updates for the OS and any app installed are up to date. Images are displayed on a Apple Studio Display. all drives have plenty of free space and there is enough RAM available, no swap. I note that for any action I do in LR Classic, like edit a photo or switching modules, etc… all cores go up to 90-100% (specially when generating previews) making my machine OS sluggish and all apps become unresponsive.

Any suggestion to fix this behavior will be greatly appreciated.