I actually ran into this problem as well during the weekend... Bought an ASUS HD7770 w/ GPU Tweak and nothing but problems when it comes to displaying monsters, player characters & NPCs. I can max out settings with the card, and everything in the game looks great (although a bit slow on response), or tone it down to the lowest settings and it's the exact same problem either way. I'm going to either upgrade or downgrade to a different card. After a full reinstall of my OS, GPU Driver, & FFXIV it's gotta be the graphics card.