In beta it seemed limited to only Nvidia GTX cards, but as recently as today I'm hearing AMD people say they are having the same issues since beta 4. No setting change seems to fix it and as far as i can tell (and several others that have been trying to figure it out) updating drivers doesn't completely fix it; although certain driver versions tend to perform better than others. So from what i figure, it'll be up to SE to work with the gpu manufacturers to figure out the solution. One thing to note about Nvidia cards; even though Nvidia states in the card/driver performance list as having FFXIV run "Good", that rating actually only applied to version 1.0 from what iv found. So far i havnt heard of any performance rating for ARR on their cards. Not sure if they'll ever look to do an optimization for ARR in the future or not but i do know SE could do some stabilizing on their end to help the issue if not completely resolve it.

For the record i do get the issues as well and I'm running an Nvidia GTX660ti with driver version 314.22 That's the most stable driver ive found so far.