Qt 5.12 performance regression, related to PreviewButtonDelegate

Bug #1812763 reported by RJ Skerry-Ryan
12
This bug affects 2 people
Affects Status Importance Assigned to Milestone
Mixxx
High
RJ Skerry-Ryan

Bug Description

On macOS 10.13.6, idle CPU usage is 99% with 4 decks (waveforms and spinnies) showing. The interface is very laggy and hard to use when playing tracks.

Reproduced from release-2.2.0, 2.2 branch, and master branch. The 2.2.0 release (which uses Qt 5.11), is normal (50% idle CPU usage).

Tags: qt5 Edit Tag help
Changed in mixxx:
status: New → Confirmed
Revision history for this message
Daniel Schürmann (daschuer) wrote :
Changed in mixxx:
milestone: none → 2.2.1
status: Confirmed → Fix Committed
importance: Undecided → High
assignee: nobody → RJ Skerry-Ryan (rryan)
Revision history for this message
Daniel Schürmann (daschuer) wrote :
tags: added: qt5
Changed in mixxx:
status: Fix Committed → Fix Released
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