Listening to podcast or paused causes high unity8 cpu &

Open podbird on rc proposed.
Ssh into device.
Play an audio podcast
Run top in ssh session.

Notice high unity8 cpu utilisation, when paused or not.

Swipe away, cpu goes down
Swipe back, cpu goes up.

top - 18:52:39 up 5 days, 8:01, 2 users, load average: 0.00, 0.01, 0.05
Tasks: 223 total, 1 running, 222 sleeping, 0 stopped, 0 zombie
%Cpu(s): 21.5 us, 27.4 sy, 0.0 ni, 51.2 id, 0.0 wa, 0.0 hi, 0.0 si, 0.0 st
KiB Mem: 983728 total, 910916 used, 72812 free, 50396 buffers
KiB Swap: 524284 total, 440124 used, 84160 free. 117876 cached Mem

  PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
 2970 phablet 20 0 579168 83356 20516 S 54.0 8.5 78:37.56 unity8
18336 phablet 20 0 366464 85928 30148 S 23.7 8.7 10:51.74 qmlscene
 2559 root 20 0 197168 4740 3876 S 8.7 0.5 17:12.81 unity-system-co
 5120 phablet 20 0 6260 1224 760 R 2.0 0.1 0:06.93 top
 6363 root 20 0 0 0 0 S 2.0 0.0 0:01.27 kworker/u:3
 3902 root 20 0 0 0 0 S 1.2 0.0 0:06.64 kworker/u:2
   71 root -95 0 0 0 0 S 0.8 0.0 3:06.00 disp_config_upd
   72 root 20 0 0 0 0 S 0.8 0.0 0:31.40 disp_clean_up_k
 2596 phablet 20 0 7144 2136 1076 S 0.8 0.2 4:35.83 upstart
  885 message+ 20 0 9896 3588 816 S 0.4 0.4 4:09.06 dbus-daemon