To those who wondered why you can't override the FSAA mode in ffxiv from inside the CC:
"◦Final Fantasy XIV – Forced on Anti-Aliasing through the Catalyst Control Center has been disabled"
This was in an older CAP update(12.1.2010). All new CAP versions contain the fixes of the old versions. I guess there was a reason to remove it back then, but now I'm not sure if it's still necessary.