UPDATE: I have attached screenshots to assist you in hopefully fixing this bug... Please take a look at the mountain adjacent to the shore, in the center-left. Thank you very much.
Update regarding blurry campaign map textures: I forgot that I like to force anisotropic filtering 16x in the Nvidia control panel, which gives sharper textures than in-game solutions for many games. This improved the texture detail. Additionally, I have disabled DLSS, and the textures look very good now. The only issue is the geometry upon which those textures rest has been possessed by a satanic tormentor. To clarify, the geometry bug was present before I made any changes in the nvidia control panel.