How is it possible that SMAA T2x has more temporal aliasing than SMAA 1x? Even FXAA has less. (Look at his arms, and then look at the box on the ground (yellow) then the intersection of the floor of the garbage can.
On the arms specifically, SMAA T2x is totally failing, and has basically the same amount of aliasing as noAA. And everything else that it supposedly AA's temporally, doesn't so much as have reduced temporal aliasing as it just has a slight wobble over time instead of being temporally stable. Downsampling+SMAA T2x looks better, but it's still missing the same aliasing so on some part's it's akin to downsampling with no AA at all.
https://mega.co.nz/#!uRABxa4Y!FY4MbrsMhnCYl3UkasLtC9_dbzqHcKoNLLsNKjfNUTk
Performance I think HAS to be a driver issue at this point..