Have you tried pressing f9? I think that would enable/disable all effects. But as much as i want the jaggies gone, I personally prefere smaa, finding the fxaa making the game and UI text way too blurry for my taste, and i cannot get it to work with the bypass-ui and bypass-ingame aa although i am using windows 7 64bit. Unfortunanetly i dont think the gem mod support smaa, so I installed sweetfx 1.51 with offline configurator and toogled on smaa there, aswell as lumasharpen and vibrance. The aformentioned options are there aswell in gemfx but not smaa.