https://bugs.kde.org/show_bug.cgi?id=351381
--- Comment #2 from Vincent PINON <vpi...@kde.org> --- Hello, I'm the happy assignee of this bug ;) speed effect is not so trivial, especially with large GOP sources, and alpha compositions can be quite slow either. (check if it is also slow when running "melt yourproject.kdenlive") For slow effects previewing at normal speed, I use a quick render profile to export that zone. I also see your post dates back from 15.04 times, improvements have been done since then, in both Kdenlive (currently 15.12.2) and MLT (6.0.0), regarding multithreading (and GPU offloading, but sometimes unstable). Maybe you could also try reverting to the default settings by renaming your ~/.config/kdenliverc. -- You are receiving this mail because: You are watching all bug changes.
