Ok Yesterday I turned on iCloud photo on all 3 of my devices - my iMac, iPhone X, and iPad Pro. Never used it before, but decided to try it out. It says I have like 4000+ photos which some I am sure I deleted long ago, but whatever. All 3 of my devices now have duplicates of everything. I went though the painfull task of deleting the duplicates on my imac and see they are still on the others!! WTF! Why is iCloud photos such a pain? I signed in to iCloud via the browser and started deleting the duplicates there thinking and hoping that's the "master location" and hopfully it'll eventually sync down to all my other devices. Will that work? All of my devices have different totals on the number of photos and my iMac fans are running full speed for some reason. Any ideas?