https://bugs.kde.org/show_bug.cgi?id=409644
--- Comment #4 from Filzmaier Josef <j.filzma...@gmx.at> --- It does not seem to be dependent on the file format / generator. I have tested with pdf, txt and epub, and tiff - all have laggy scrolling. I am using Okular 21.04.3 but can also reproduce it with the current master branch. I have built okular from source, if you can point me at interesting source files to debug i am glad to help. The Effect is especially extreme if i unplug the device (e.g. when TLP enables some power saving features like power_save cpu_governor etc) so it does seem like a performance regression -- You are receiving this mail because: You are watching all bug changes.