My daughter recently installed LightRoom 6 to handle the RAW files (24+ MB each!) from a Canon Rebel 7Ti. The system has an i7 4790k with 16GB RAM and a GTX 970 graphics card. The OS drive is a 1st gen 750GB Samsung SSD. IIRC it is an 840 EVO, slightly more than 2/3 full. The OS is Win 10. She has complained to me that it is slow, and has had me wait for the changes to show up when she makes them. It does take a while. I'll admit I have not let myself get drawn into the Adobe ecosystem, so I know nothing about how any of it works. The sizes of the RAW images, for example, are estimates, because the images are "imported" directly into LR, and don't show up as files. Have I misconfigured her system? Has the OS SSD gotten too old? Does the GTX 970 lack horsepower? We are puzzled.