https://bugs.kde.org/show_bug.cgi?id=490693
--- Comment #2 from Karol Bryd <karo...@gmail.com> --- I found the root cause - it is the Jetbrains Toolbox application (!!!). As soon as I start it, the stutter starts. When I quit it, it system behaves normally. -- You are receiving this mail because: You are watching all bug changes.
