Video slow then jumping

[shotcut]

Your system is very weak for editing 4K video. It is like the minimum for HD. See the system requirements in the FAQ. You will need to use Proxy and Preview Scaling, and read about

How to Reduce Memory Usage

Here are ways to reduce the memory usage in general: Save and restart Shotcut Close other browser tabs. Close other applications. Reboot (does all of the above). Here are ways to reduce the memory usage of your project: Reduce the resolution of the Video Mode. Reduce the number of tracks. The number of tracks will increase the amount of caching to prevent files from being closed and reopened repeatedly from one frame to the next. Here are some ways to reduce the memory usage while editing: …