https://bugs.kde.org/show_bug.cgi?id=361360
--- Comment #24 from Jean-Baptiste Mardelle <j...@kdenlive.org> --- A few hours ago, I just fixed a huge memleak in the qtblend transition. That might be the cause for your slowdown. I have pushed the fix to MLT git master but for some reason the build fails on our PPA so it has not been updated, I am trying to fix this... will let you know when the fix is in PPA -- You are receiving this mail because: You are watching all bug changes.