application lags and loads slowly.

[Airforcej1]

I have a new Samsung s5 active. I have reinstalled the Spotify app many times. I force stop and clear the cache. However the app lags when I try to click on the "radio tab. When I click my play lists that takes a while to load as well. Changing songs on any format takes a while too.
I have good service and bars 4G lte.????

[supersonic]

At all, the app has become slow on devices with less power under the hood. I have hookups when streaming via bluetooth, would be great if the android app gets a performance makeover.