There is a way to disable AA via the INI FILE.
https://www.reddit.com/r/Fu**TAA/comments/17h2p25/alan_wake_ii_does_not_have_forced_taabut_forced/
(** = ck) - change to get the url correct.
Credit to loonelywolf
"if anyone whants to get rid of the taa just edit the
"m_eSSAAMethod": 0,
"m_fSSAASharpening": 0.0,
in AppData/Local/Remedy/Alan wake 2 Renderer,leave it like mine
the game runs much better and looks better."
I have tested it and it does work. DLSS and FSR will both be disabled if activated.