i recently built a $3,000 PC and im getting lots of lag in FFXIV, i KNOW my pc can handle this game with no questions, can anyone help

Specs of PC are (no overclock at all)

AMD Phenom(tm) II X6 1090T Processor

MSI (890FXA-GD70 (MS-7640))

Vengeance Series 8GB DDR3-1600 (PC3-12800) CL9 Dual Channel Desktop Memory

Western Digital Caviar Black 1TB 7,200 RPM SATA 6.0Gb/s RAID 0 2TB Total

AMD Radeon HD 6950 2048MB

Realtek High Definition Audio

Windows 7 Home Premium (7601)

ASUS VE228H 21.5" LED backlit Widescreen LCD Monitor

Corsair HX Series 850 Watt ATX 12 V Modular Power Supply

this setup cost alot and i know can handle this game, someone PLZ HELP!