I’m in the same boat. The home sharing of photos has been getting slower and slower as the Apple TV updates roll out. With 15.1.1 I’m lucky if my photo library loads at all. Videos are fine. Photos… forget it. This used to be such a nice feature.Hopefully (but not holding my breath) it addresses the fact that "My Computer" Photo libraries either take many many minutes to load, or never load at all. That's new behavior.