Version
3.0 of the OpenShot video editor is out.

One of the largest and most noticeable changes to OpenShot 3.0 is
our improved video preview, resulting in smoother video preview and
fewer freezes and pauses during previewing. But to understand why
things are so much smoother, we need to look deeper into our
decoding engine. We have rearchitected our decoder to be much more
resilient to missing packets, missing timestamps, and better
understanding when we are missing video or audio data, so we can
move on without pausing.

Source: LWN.net – OpenShot 3.0 released