Generally, anisotropic filtering can noticeably affect framerate and it takes up video memory from your video card, though the impact will vary from one computer to another. ... When the in-game camera views textures from an oblique angle, they tend to become distorted without anisotropic filtering.

Does texture filter anisotropic affect FPS?

Anisotropic Filtering can increase and sharpen the quality of textures on surfaces that appear far away or at odd angles, such as road surfaces or trees. Anisotropic Filtering has a small performance cost (FPS) and can increase image quality in most 3D applications.

Does texture filtering improve performance?

Maximum resolution textures and texture filtering often have virtually no impact on performance while also having the greatest effect on image quality. It has no effect on performance whatsoever, and it looks better, why would I go lower?