>is that a normal render time to react under such circumstances?
>If Yes, then what are the workarounds?
Render without react, especially if everything is static, it will be not so difficult. The main thing to decide under which engines to optimize, maybe with different engines need different ways to work with the house to obtain the most productive result.
And in the future could have the possibility of incremental rendering: https://www.facebook.com/notes/andy-street/react-n...