Editing long videos in mobile Rush

I'm trying to do some editing on my iPad Pro for a 7 hour video and it's just painful. I understand that you need a truckload of RAM for something like that, but can't there be some sort of optimization (optimized media) or rendering the next few minutes of media ahead of time so that I don't have to wait 10 minutes for the iPad to catch up every time I stop and start the timeline?