
You can physically move them on your system drive, or use the option in Lightroom to manage presets (which is probably easier). Try trimming down your presets by temporarily removing them. These aren’t as common any more, but if you still have legacy ones such as the VSCO presets (which aren’t available any more) and you’re experiencing a slow down, then this might be the cause of your problems. In my experience, this can be an issue if you’re using older presets imported into Lightroom, especially ones that might have multiple versions for each camera. The Adobe support documents on this put the number at 2000 presets, but I’m not sure if this is from an older version. If you have too many presets installed it can slow down the Develop module. This used to be a bigger issue with Lightroom, but in a previous version they improved the “too many presets” issue, but in my experience it can still be an issue. Note that if you are in the develop module, after you turn off the second display window, you may need to go out of the develop module and back in again to see a difference. If you are experiencing performance issues, and you are using Lightroom with the second display option turned on (set to either grid or loupe view) try turning this off temporarily and see if it makes a difference. If you’re scrolling through images in the develop module for the first time, it will still have to load them fully, but going back over them again will be much quicker. 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.
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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.
