https://bugs.kde.org/show_bug.cgi?id=385842

            Bug ID: 385842
           Summary: slow transitions after splitting audio from clip
           Product: kdenlive
           Version: 17.08.2
          Platform: Neon Packages
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: NOR
         Component: Effects & Transitions
          Assignee: vpi...@kde.org
          Reporter: s_chriscoll...@hotmail.com
  Target Milestone: ---

Created attachment 108389
  --> https://bugs.kde.org/attachment.cgi?id=108389&action=edit
video showing the bug

Please see the attached video: "video showing the bug".

Steps to reproduce:
1. Download the attached video: "video for bug repro".
2. Place two copies of the video overlapping on two video tracks and create a
dissolve transition between them..
3. Play the project. You will see a smooth transition.
4. Now, split the audio from both clips.
5. Play the project.

Result: The dissolve transition is incredibly slow and choppy, dragging my
beefy desktop system to its knees and taking an extremely long time to play.

** My System **
Kdenlive: 17.08.2
MLT: compiled from git (reported as 6.5.0 by Kdenlive)
OS: KDE Neon 5.11.0 64-bit (Plasma Desktop 5.11.0, KDE Frameworks 5.38.0, Qt
5.9.1)
Linux Kernel: 4.10.0.37-generic
CPU: Intel Core i7 930 (2.8 GHz quad-core)
Video: NVIDIA GeForce GTX 970 w/ 4GB RAM (PCI Express)
NVIDIA video driver: 375.66

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