Public bug reported:

[regression] Touch scrolling the dash is stuttery again, and lag higher
than it was.

Test case 1: Scroll the dash smoothly with a finger.
Expected: Dash scrolls smoothly.
Observed: Dash often jumps abruptly.

Test case 2: Pull down/up the notification bar quickly with a finger.
Expected: It closely matches the finger position.
Observed: It's a long way behind.

These issues are so familiar, it's rather obviously a regression of bug
1486341. And I can see the required QML_NO_TOUCH_COMPRESSION=1 has gone
missing too.

$ system-image-cli -i
current build number: 387
device name: mako
channel: ubuntu-touch/rc-proposed/ubuntu
last update: 2016-03-14 06:38:12
version version: 387
version ubuntu: 20160312
version device: 20160304.2
version custom: 20160312

** Affects: unity8 (Ubuntu)
     Importance: High
     Assignee: Daniel van Vugt (vanvugt)
         Status: In Progress


** Tags: performance regression-proposed

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https://bugs.launchpad.net/bugs/1556763

Title:
  [regression] Touch scrolling the dash is stuttery again, and lag
  higher than it was

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