Public bug reported:

According to the attached callgrind trace (obtaining scrolling up/down
the fake_ubrick_scope) one can see that calls to Image item setSource
end up intercepted by UCQQuickImageExtension::setSource that goes ends
up in  UCUnits::resolveResource

That takes 23% of the total CPU time looking for which file to actually
open.

** Affects: ubuntu-ui-toolkit (Ubuntu)
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1604029

Title:
  UCUnits::resolveResource takes up to 23% of CPU time when scrolling a
  long Unity8-dash Scope

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