Clip Share - Optimize and Pruning the Database

Hello everybody, I have problem with my site, my site is very very slow, it takes ages to load the "main" page, clip-share is made very bad, I need to make so it is faster to load the page. Other page then main page is pretty fast. The database need to be optimized and also pruning the database. Need so it load faster the pictures and video thumbs from the videos. Please be sure if you have experince with it Thanks in advance.