Because sweetFX no matter how good people claim it to be is a form of post processing that blurs/adjusts/sharpens, which removes detail. The only way to remove jaggies without removing detail is by either anti-aliasing that is done in-game OR the method I use, downsampling. When you render a game at 2880x1800, downsampled to 1920x1200... jaggies no longer exist. edit: As for the petition. I'll definitely sign. True anti-aliasing beats post processing any day of the week.