I recently had to update my Spotify app after resetting my phone. When I'm out I have a large playlist I use to play music off of. Before I had troubles with it, but not like this:

• The shuffle button simply does not work. When I press it, the song carries on, but everything else about the app freezes
• If I go to search for a song and play it, and press shuffle (the only time it DOES work), I'm only given all the songs that fit my search criteria. Even if I go back and can see I'm in the rest of the playlist, if I searched let's say "Radiohead", my queue is only made of Radiohead songs, when it shouldn't be
• If I choose a song to play out of my queue, it literally chooses a different song to play instead, regardless of position. Sometimes it will jump three spaces, sometimes it will choose a song that's not even on the screen.

All with the usual slow and prone to freezing behaviour. Most of the time I can only play one song before I have to reset the app. Admittedly my playlist is very large, but maybe you should actually accomodate for that.