Good app, but slow load times, hakeliger offline

Since I saw this app with a friend (iPod), after which it worked flawlessly, I thought to myself that I should buy this to me. My review refers equally to both my phone (HTC Evo 3D) and my tablet (Acer Iconia Tab A200), as it runs contrary to the previous speakers on the tablet, almost as "liquid" as on the phone.
Apparently this app for iOS is designed as it is not quite as liquid plays the songs and other features seem a little hakelig. For example, does the app (after loading the song) or between 5 and 10 seconds until you can start playback. After this now starts running it increased the first 3-4 seconds more between periods, after which it runs largely liquid.
I have now but a song with many tabs in rapid succession (for example, "Back to Shalla-Bal" by Joe Satriani) there is in these passages often frames and audio interruptions to 50% crashes Song Sterr case even completely.
Now for the only difference between tablet and mobile: the offline mode. If you add songs to his favorites these are also available offline. Währrend this mode with my HTC even works much better than when the phone is on-line appears on my tablet, the message "Sorry, could not load normal audio track.". Accordingly, I can only look at the tabs, but not listen to it. This works on the smartphone already much better: we need no longer wait for the store, songs can be played back immediately. Even with fast passages to reduce the glitches, the tone errors remain even completely.
All in all a solid app that provides a relatively wide range of different songs. However, there are still some flaws exist, you would have to fix.