These are the changes I have made, which have massively improved my overall workflow and image load speed: 1) Force OpenGL mode on my GFX card using the config.lua setting mentioned further up this thread 2) Put my catalog and preview files on a dedicated SSD 3) Increase the Camera Raw Cache to 100GB 4) Standard Preview Size to Auto (1920px) - the res of my main editing monitor 5) Preview Quality to High All these made incremental improvements - however the biggest change was to exclude the following from my Anti Virus utility: Lightroom Catalog Lightroom Cache Folder Lightroom Previews Folder RAW files This has given a massive performance improvement to the point where edits are near instant, and the develop pane performs as expected with near instant load speeds on images. The only thing that doesn't change is the high cpu load - but it's still a good start. Hope this helps a few of you, James
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