Why is Lightroom 6.1.1 so slow? I have not had performance issues with Lightroom until updating to LR 6. I've used LR since version 1, so have a good idea of how the program should perform. I have a fast Mac and graphics card. I need to work through tens of thousands of images, so any delay (e.g., delay in rendering a preview, etc.) costs valuable time. Aside from unchecking the "Use Graphics Processor" box in preferences, any tips in speeding things up? Is LR 6.1.1 really this slow?