https://bugs.kde.org/show_bug.cgi?id=406331

            Bug ID: 406331
           Summary: Slow schrool with mouse scroll wheel
           Product: plasma-integration
           Version: 5.15.4
          Platform: Fedora RPMs
                OS: Linux
            Status: REPORTED
          Severity: major
          Priority: NOR
         Component: general
          Assignee: plasma-b...@kde.org
          Reporter: lst_man...@webengineer.com
  Target Milestone: ---

Since Update of Fedora today, 4/4/19, mouse scroll wheel is slow.  It take
between 7 an 8 "clicks" of the wheel to cause any page to scroll.  It doesn't
seem to be application specific, as I have this problem in Chrome and well and
Konsole.  Alll aps I've tested so far.  Including PHPstorm, a Java app.


STEPS TO REPRODUCE
1. Login into plasma desktop
2. Open the Chrome web browser
3. Roll mouse wheel

OBSERVED RESULT
Extremely slow scrolling.  Note that grabbing the scroll bar does scroll as
expected.  It is only the mouse wheel that has this issue.

Disabling the mouse detent click does not improve the scroll speed.


EXPECTED RESULT
Viewport to scroll one line or more per wheel detent click


SOFTWARE/OS VERSIONS
Operating System: Fedora 29
KDE Plasma Version: 5.14.5
Qt Version: 5.11.3
KDE Frameworks Version: 5.55.0
Kernel Version: 5.0.5-200.fc29.x86_64
OS Type: 64-bit
Processors: 12 × AMD Ryzen 5 2600 Six-Core Processor
Memory: 15.7 GiB of RAM

ADDITIONAL INFORMATION
WOrk perfectly prior to this morning's dnf upgrade

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