Why easyblog load slow

I've just test my site with 3 factor at GTmetrix

First one is the homepage http://www.acnethai.com with many module and image. Total page size is 960KB and page load time is 8.94s

Second is normal content from joomla with komento and here is link http://www.acnethai.com/บทความ/news/2681-โปรแกรมรักษาสิว-สำหรับสิวดื้อยา-สิวหายยาก . This content has one image and size is 120kb. Total page size is 640KB and page load time is 6.46s

Last one is a blog entry http://www.acnethai.com/easyblog/1085-รีวิว-blue-light-laser-แสงสีฟ้ารักษาสิว-จาก-proderma-clinic which user add only one image and size is 11kb and comment use Komento also. Total page size is 1.25MB and page load time is 9.63s

Here is 3 page compare result http://gtmetrix.com/compare/YlSDMLMS/zsDL9UlM/FaJLRMl8

All of 3 page are in same website and same server.