I have to agree with above poster on this. While I wouldn't call my build phenomenal it still not weak by any means for FFXIV, and in fact I played other games with little to no issues. However, in titan fights I noticed that when you have WoL animations going off on upwards of 5 people it is going to cause frame rate to drop on certain cards/builds still, and that isn't taking into account what else might be going on in the fight. I had 2 gtx 660's in SLI and saw this happen in Ultima HM and Titan (HM/EX) fights only, but after upgrading to a higher tier card (780 Ti) have not had this issue crop up. That being said, while your rig might handle the game admirably otherwise the animations for that fight alone might be causing frame rate issues which you can get around by turning settings down.