This is the most noticeable effect, should…
But sometimes the driver can interfere:
PSA: NVidia Anisotropic Bug: in-game setting disabled (was: Some tests on Texture Resolution and Quality) - Community / General Discussion - Microsoft Flight Simulator Forums
And sometimes settings are not doing what we might expect them doing:
Could you please explain what some graphics settings are really doing? - Archives / Dev Q&A: Sept. 29th 2021 - Microsoft Flight Simulator Forums