I'm going to say that is really isn't that great of a processor, however my computer does the exact same thing on a i5 dual core 64bit OS with 2 gigs of ram on a nvidia GT 540M with 8 gigs of ram. Your pc is slow but not that slow. The issue is with the servers. The servers have a lot of lag time, the average server though out final fantasy xiv have a average ping of 120 + meaning highly populated areas in game are prone to give you less FPS. I will also agree with the others on having a 'new' computer. Having a new computer doesn't mean much if whats in the computer isn't up to standards with the minimal running preferences. My computer runs this game on max settings on the bench mark test and finishes with 6k and above. The issue isnt with your pc the servers are just not stable.