Xampp Website enabled https and its super slow

So I have had my company website running on a windows server with XAMPP without HTTPS and it was pretty fast (its a single page site), having just enabled it by way of the following below in httpd-vhosts.conf , it is stupid slow, taking around 6-10 sec to load:

Any obvious ideas on why this could be?

<VirtualHost *:443>    DocumentRoot C:/xampp/htdocs/example/    ServerName http://www.example.com    SSLEngine on    SSLCertificateFile "conf/ssl/www.example.com.crt"     SSLCertificateKeyFile "conf/ssl/www.example.com.key"<Directory "C:/xampp/htdocs/">        Options All        AllowOverride All        Require all granted</Directory></VirtualHost><VirtualHost *:80>   DocumentRoot C:/xampp/htdocs/example/   ServerName http://www.example.com   Redirect / https://www.example.com</VirtualHost>