I was recently asked what kind of speed optimisations could a realtime dashboard written in javascript benefit from?

Some of the bottle necks I would imagine are the templating engines waiting for the entire data set to download before anything renders.

Another issue would be constant repaints on the DOM as new data is loaded and it re-renders.

I was thinking a few ideas to improve could be an initial server side render, and exploring async rendering in a framework like Vue, or React.

Has anyone dealt with this type of problem, what are some solutions you found?