Hello, my English level is limited, please forgive me if there is any inappropriate expression. I am an old user of kdenlive, and often process more than 1 hour of video, more than 100-300 video clips. For many years, once more than 50 clips are imported, they often crash and crash. After importing, importing more than 50 video clips from the project box to the timeline often crashes and freezes. When all imports are complete and normal editing is possible, it often takes more than 1 hour, or even more, half an hour when you are lucky. But I always hope that the new version can improve this, but for several years, it has always been like this. Recently, I am editing more than 200 video clips. I spent 3 hours and still cannot edit normally. I still import them. I collapsed, it really collapsed.