Im at the same stuttering situation ... I dont cary generally, but during listening of mp3s its pretty annoying. I believed its somehow caused by bad usage of the cpu or something like that, so I reniced the replay-related processes - pulseaudio, mediaplayer, dbus_wrap something ... I increased priority to -20 and it improved the situation a lot. Now, it stutters only when lets say I start a browser (during the start) or a app manager (during update) ... The problem is I have to renice the processes again after each reboot ... ... and Im unable to determine how to use "nice" during boot ... anyone knows, tell pls!