Even if I managed to install CinGG, the playback problems remain. With mkv the problem is more serious but the other containers don't work well anymore. Watch the video: https://www.dropbox.com/s/hf3hd80dqja08jz/playback.mp4?dl=0 There is a first slowdown at the first wipe transition, then slowly the playback resumes fluidity. At the second transition the insertion point slows down a lot, so much so that it seems blocked, while the audio continues to flow normally. This happens to me every effect or transition I put on, and it gets worse using mkv (with any codec below) which slows down even simple playback without effects. I don't know when this problem started, but no less than a month. I don't even know if it's due to my PC. Surely it had never occurred before. Notebook i7 2720QM; Geforce 460M, 12 GB RAM, SSD; Checked "Play Every Frame"; Video-driver: X11-OpenGL;