Hi Damien,
i just purchased a new iMac (retina 5k, 27 inch, Late 2015). I have also upgraded my photoshop and Lightroom to the newest Adobe cloud.
Move calibrated the screen with my color-munki display.
Tonight I tried to edit a photo like I normally do, I did basic edits in lr, then exported to ps. I saved the image for web and uploaded to my Facebook page and the photo was completely washed out. I realised that lr was in Adobe RGB mode so I rectified this. Edited from scratch again and then I uploaded to Facebook and it's the same issue. I really don't know where I am going wrong here.
any help would be greatly appreciated