https://bugs.kde.org/show_bug.cgi?id=527409

            Bug ID: 527409
           Summary: Performance hit with multiple tabs
    Classification: Frameworks and Libraries
           Product: Union
      Version First unspecified
       Reported In:
          Platform: Other
                OS: Linux
            Status: REPORTED
          Severity: normal
          Priority: NOR
         Component: QtWidgets Output
          Assignee: [email protected]
          Reporter: [email protected]
                CC: [email protected]
  Target Milestone: ---

DESCRIPTION

If application, such as Dolphin, has more than 30 tabs open, there can be
performance issues and
application may start slowly.

STEPS TO REPRODUCE
1. Open Dolphin
2. Open many tabs
3. Close Dolphin
4. Reopen Dolphin

OBSERVED RESULT

Noticeably slower startup time

EXPECTED RESULT

Close if not as fast startup time as Breeze

SOFTWARE/OS VERSIONS
Operating System: Fedora Linux 44
KDE Plasma Version: 6.8.80
KDE Frameworks Version: 6.32.0
Qt Version: 6.11.2
Kernel Version: 7.2.11-200.fc44.x86_64 (64-bit)
Graphics Platform: Wayland
Processors: 12 × AMD Ryzen 5 3600 6-Core Processor
Memory: 16 GiB of RAM (15.5 GiB usable)
Graphics Processor: AMD Radeon RX 6600

ADDITIONAL INFORMATION

This is very likely with us creating the CSS properties at each change instead
of more carefully

See also https://invent.kde.org/plasma/union/-/work_items/232

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