Transition between photos is very slow

[Carlos De Carvalho]

After version 15, the transition between photos is very slow. I changed the GPU to a modern RTX 5060 and the problem persists. My PC is a Windows 11 with a Ryzen 7 5770x processor and 46GB of RAM. I've already searched this community for solutions, but none of the ones presented here worked. But the most absurd solution was Adobe asking me to downgrade to version 14. A real rip-off. And there's no estimated time for a fix for this bug. A billion-dollar company that hasn't been able to solve the problem for over 40 days. I currently have over 2500 photos to edit (graduation).

[johnrellis]

Lots of complaints here about sluggishness in LR 15, and there are probably multiple causes. I don't know which magic spells you've tried, but here's a list of ones that have helped some others. Restart your computer after trying each step:

- Try updating your graphics driver by going directly to the manufacturer's web site, rather than relying on Windows Update or a manufacturer's update utility:
https://helpx.adobe.com/lightroom-classic/kb/troubleshoot-gpu.html#solution-4

- In Preferences > Performance, set:
. Use Graphics Processor: Custom (rather than Auto)
. Check Use GPU For Display, Use GPU For Image Processing, and Use GPU For Export
. Use GPU for Preview Generation: On (rather than Auto)

- Make sure you catalog folder is not being synced to a cloud service like Google Drive, Onedrive, Dropbox, Icloud.

- Set Preferences > Performance > Enable HDR in Library to On. A year or so ago, that helped with sluggish filmstrips, though I don't recall recent reports about it. But it's harmless.

- Do File > Optimize Catalog.

- Temporarily disable all anti-malware / anti-virus packages, including Windows Defender. If that helps, then add exclusions for the catalog folder and all photo folders.

- Disable Catalog Settings > Automatically Write Changes Into XMP.

- Disable the options Catalog Settings > Metadata > Automatically Detect Faces, > Analyze Photos Of Selected Source, and > Automatically Analyze All Photos In Catalog.

- Try resetting LR's preferences:

https://www.lightroomqueen.com/articles-page/how-do-i-reset-lightrooms-preferences/

LR sometimes soils its preferences file, and resetting it can fix all sorts of wonky behavior. That article explains how to restore the old preferences if resetting doesn't help.

- Do Preferences > Performance > Camera Raw Cache Settings > Purge Cache.

- Delete the entire preview cache by deleting <catalog>Previews.lrdata from the catalog folder. LR will rebuild them incrementally as you browse your library, or you can select all photos and let the command Library > Previews > Build Standard-Sized Previews run all night.

[Carlos De Carvalho]

johnrellis, I am immensely grateful for your attention to my post. I analyzed all the suggestions and put them all into practice, one by one. But unfortunately, nothing solves the problem. I spent $550 on a new GPU because of this issue. But it's clear that the GPU is not the problem causing the slowness. The developers did something wrong in version 15! Because version 14 was perfect! Now I have no alternative. It's a lot of frustration editing over 2500 photos while waiting for an update that they haven't been able to implement for 40 days.  All I can do is wait.  And once again, I am immensely grateful for your attention. Because Adobe's suggestions are palliative: downgrading to version 14, or disabling the GPU.