As the documentation suggests, you should enable the cached template loader in production. This avoids the overhead of reparsing and recompiling the templates each time it needs to be rendered. The cached template is compiled the first time it is needed and then stored in memory. Subsequent requests for the same template are served from memory.

If you find that another templating language such as Jinja2 renders your page significantly faster, then it is quite easy to replace the built-in Django template language.