You’ll notice this particularly if working on the same set of images and you are moving back and forward over images you have already previously loaded.

If you are loading from a super fast SSD then it might not affect it that much, but if you’re loading photos stored on a slower external drive, it can make a difference. How much this affects performance depends on your computer. If you have a low cache size set, it can fill up quickly, and when moving back and forward, it will have to reload the full data each time. Lightroom checks the cache for the original image data and can skip early stage processing if the image data is cached. The process is a little faster if the original image data is in the Camera Raw cache. It uses the original image data as its foundation, and then updates the preview for any processing or adjustments that have been applied. Here’s what Adobe says about the Camera Raw Cache:Įvery time you view or edit raw images in the Develop module, Lightroom generates up-to-date, high-quality previews. This might sound like it has nothing to do with Lightroom, but it actually controls how much image data is cached for the develop module.

If you’re finding that images take a while to load, especially when moving back and forth between photos in the develop module, then a likely culprit is the Camera Raw Cache. Not Enough Space Allocated to Camera Raw Cache.

Lightroom slow on mac