I use Lightroom CC and Photoshop CC. I adjust photos in Lightroom CC first and then click control E to edit them in Photoshop. I then save the edited photo in photoshop, Unselect it, and then go back to Lightroom. This automatically files the edited photo in Lightroom. My problem is that after about a half an hour of doing this, my computer comes up with an error saying there is not enough memory and tells me to close lightroom. I have 16 GB of RAM and my pictures are at most 20 MB in RAW format. When I use Lightroom alone, I have no problems.