FYI, if you're using SSAA, you're indirectly increasing internal resolution anyway. For example, 3x IR (Full HD) with 2x SSAA makes your GPU render internally at 6x IR (4k), thus resulting in image quality nearly identical to 6x IR with no AA...
Avell A70 MOB: Core i7-11800H, GeForce RTX 3060, 16 GB DDR4-3200, Windows 11 (Insider Preview)
ASRock Z97M OC Formula: Pentium G3258, GeForce GT 440, 16 GB DDR3-1600, Windows 10 (22H2)
ASRock Z97M OC Formula: Pentium G3258, GeForce GT 440, 16 GB DDR3-1600, Windows 10 (22H2)