https://bugs.kde.org/show_bug.cgi?id=378579
--- Comment #1 from Dominik Haumann <dhaum...@kde.org> --- I have not yet tested this here locally, but I once heard that the graphics driver may cause very slow behavior. It is unlikely you hit this, but still this may be one reason. Besides that, Kate 3 uses Qt4, and Kate 5 uses Qt 5 - so also the underlying Qt stack may cause this. This needs to be profiled. -- You are receiving this mail because: You are watching all bug changes.