Windows 10 slow boot and shutdown after anniversary update

After installing the Windows 10 anniversary update, my computer boots very slow. The first part of booting (bios, loading Windows) is as fast as it used to be, but after logging in I'm stuck on a black screen with just my cursor for over a minute before it seems to continue with the login.

I made a video to explain what I mean.

Also, when I shutdown, Windows says that Spotify is blocking the shutdown - Which is strange because why would Spotify do this? It will stay on this screen for about a minute until it just gives up and I'm back on my desktop with everything except Spotify shut down. If I click 'Force shutdown' or close Spotify before shutting down, everything works fine.