Our forum was converted from vBulletin to XenForo. Our forum is running on a private server. In fact, after having converted from vBulletin to XenForo, I realized that XenForo uses up more server resources than vBulletin. Our forum is big. It has more than 170,000 members and 4 million posts. I need someone to help me optimize our server for XenForo to run better. Also tell me the price.