Hi @calm_genie3137, welcome to the community!
We’ll need a bit more info to help troubleshoot. Could you share what version of Lightroom Classic you’re using and when the issue started? Any extra details about what’s happening would be great.
From the looks of it, this might be related to the preview cache. You can try the steps in this guide:
https://adobe.ly/4jgBRSY
Thanks so much!
Alek
*(If you mention me with an @, like @Aleke, I’ll get a notification and can respond faster.)*