This certainly is a game breaking issue for me. I will be building a new computer in the next 2 months and yes I will be outfitting it with the superior video equipment (which means going AMD.) If I don't get reassurance from Cryptic in any sense that they are currently working on the fix or that they have just put it in their "We'll fix it whenever we get to it" bin, then I simply will not be playing it. A lot more games for the PC out there work better with the AMD cards than Nvidia and I will not sacrifice a computer for just 1 single game.
Will be watching this post closely for the next few weeks. And all I have to say is, Cryptic you better figure this out on your own or with help of ATI before FFXIV comes out or....well, you know the rest.
Here is hoping it is fixed soon as well. There was a similar problem in Champions Online where AA on ATI 5800 series cards caused major graphical glitches. I play on a 30 inch so without AA a good portion of games are pretty jagged - part of the reason I left CO.
It looks like CO and ST:O make use of the same engine, so here is hoping that they fixed the issue in CO and it's an easy fix in ST:O.