well what is subpixel accuracy??!? well, basically with FF9 they made more...um...detailed character bodies. with that came more polygons. on the PSX the polygons can only move 1 pixel at a time. when you make the res huge (liek 1280x960 is 4x PSX res) the polys move a huge distance just to move 1 pixel. and since a lot of them are moving at once, you see that weird jumpy effect. and well a lot of people notice it on FF9 because it has those neato character bodies with lots of polygons that love to move all over.
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Dedicated to mediocrity and repetition since 1994.