Poorer performance with all music synced?



I'm often without good cell service, so I decided to sync my full music library to my phone. iPhone 6 with ~80gb free, music library is ~6500 tracks (~45gb). Took a couple of days but got it all synced. I assumed this would also help performance, since streaming is no longer necessary to play each track. But the opposite is true - even if I select the local/synced library there's a lot of lag and lack of responsiveness in the controls. Anyone else experience this? Is this size library pushing the limits of the software? Thanks for any feedback.


Yes, there is another thread here talking about the same thing. No word on what causes it.


Thanks for the reply. Just deleted all my synced music and the app is responsive once again.