Some imported files do not have a preview

Question

Some of my newly imported files appear very blurry and pixelated when zoomed in or in full screen mode. Before v. 14.2, the program might say "loading" and then make the preview quickly.

I am using Lightroom Classic 14.2 on a Macbook Air 2020 with an M1 chip. I am looking at HEIC photos from an iPhone.

I tried the following:

* Library > Previews > Build Standard Previews (for one or all photos in a folder at one time). Did not work.

* Catalog Settings > Previews > Preview Quality. I changed it fron Medium to High. Didn't work. I changed it back to Medium. Didn't work.

* Photos > Rotate Left (CCW) followed by Rotate Right (CW). This made the Preview show properly. (This was just an arbritary thing to try, but it worked!)

I did get one preview as a solid bright green image.

TanyaThree · Accepted Answer

It seems to be a memory problem on the computer. In Monitor, if the memory pressure is orange or high green, I get this problem. If I close and restart both Lightroom and Firefox so the memory pressure goes down,  some images are still blurry in library until it says "Loading" and then the image looks good after a few seconds. It would be nice to have a warning that caching isn't good enough and to reduce the amount of memory being used on the computer overall. I have 227.95 GB available of 494.38 GB, so there should be plenty of room for caching.

jeffrey.b · Answer

I found just going to develop the window made the image appear normal.

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