First, you need to find out why it is slow. Is it only slow on your location or is it slow on the server-side? Google page speed insights and GTMetrix are great tools to assess your website's performance 

We use Cloudflare CDN. It gives a tremendous boost to both speed and security.

Make sure your images are optimised and that your front page isn't too heavy, at least until UNA supports lazy loading.

Kind regards

Finn