Sluggish performance when connected to an OpenDNS server

Last summer there was the DNSChanger malware hitting computers. I decided to connect to an OpenDNS server to be safe from it. Primary server 208.67.222.222 as mentioned here: http://guides.macrumors.com/Mac_Virus/Malware_FAQ#Why_am_I_being_redirected_to_other_sites.3F Everything was fine since then. Lately, I've been experiencing sluggish performance and redirects to an OpenDNS site with search results when the website I wanna go to doesn't load properly. Any idea how to troubleshoot this? I've switched to a DNS Belkin server because my MacBook Pro is currently wired to the Router. I'm using, of course, a wired internet connection.