[AkBKukU]

One problem is Blender's multithreaded rendering doesn't scale well to VSE work because it focuses on breaking up each frame and as a result doesn't well utilize multiple cores. I've experimented with making a plugin [1] in the past to start multiple render jobs different points in the timeline in separate processes and was able to massively speed up renders.

I have since switched to Resolve on linux as well but due to using Blackmagic cameras that work better with it.

[1] https://github.com/AkBKukU/blenderSubprocessRender