I tried running it last night. When I got to the very first cutscene (after the opening cinematics), the game becomes very choppy.
I'm running quite an old system: Pentium D 3Ghz, 2Gb ram, Geforce 7800 GTX.
If anyone has been able to play FF12 without trouble, could you please list your PC specs? I just wanted to compare and maybe figure out what piece is the most important thing to upgrade first. I'm thinking the gfx card, but I could be wrong.