Dear Guys, I brought a new iphone 6S+ and used the "Live photos" function often. Because Lightroom can't support "Live photos" well, so I am going to import all my previous pictures into "Photos" in OSX (10.11). I wonder if I use single Photos Library, will there be any problems if there are too many pictures within? ( crash? or very very lag when viewing or operation?) I had about 1.5 TB photos (maybe 200,000+ over 10 years) which I used to save these them by structured folders (I managed them by Windows OS before). I don't know if I can import all of them into one Photos Library and just backup the Photos library?? PS: Years ago, I ever used iphoto and created separate iphoto libraries (one for each year), but I found it was inconvenient for me if I need to create an album or slide show with pictures from different libraries, so I prefer to use since Photos Library if possible.