Some obvious questions: do you have enough cooling for your rig? Are Temps good on your cpu, your gpu? Did you put your ram in the right channel? Some mobos require a specific channel set up if you're only using 2 sticks. Are you using the same ram brand for each stick? Are you using any 3rd party tools when playing ffxiv, like ds3, and if so what are they? Are their drivers updated? Seems to me that if assets aren't loading, it's a memory issue, and if you're getting bsod, it's either a memory leak or a driver fail.