I updated to iTunes 12 before upgrading to Yosemite. I thought it was incredibly slow. I was hoping it was just because I hadn't updated to Yosemite yet.





I was wrong.





Changing from playlist to playlist, from music to movies, the name of a track... pretty much every single step I take has 2-4 seconds of lag time. Beach ball on every click.





Granted, I have a library that has hundreds of playlists and 150k songs at over a terabyte on an external drive, but none of that mattered yesterday when I was running iTunes 11 on OS X 10.9. I had heard that each iteration of iTunes was making it more and more difficult for users with massive libraries, but I never really noticed until now.





I'm planning on reaching out to iTunes, not that I expect a response, just hoping that others are doing the same and a fix could be in the works.





Is anyone else having this problem?