EagleWings
Headphoneus Supremus
Scroll was never perfect but its becoming bit annoying lately. I'm not sure if its a firmware bug. I'm using the latest 1.16.
The latest firmware is v1.3:
http://fiio.me/forum.php?mod=viewthread&tid=39932&extra=page%3D1
Could you test if the problem persists after upgrading to 1.3?