in VR headset floor texture looks blurry after certain distance, i need help for this issue.
It might need anisotropic texture filtering. You could try changing the r.MaxAnisotropy console variable between 1, 2, 4, 8 and 16 and see if that has any effect. Make sure the Texture Group of the texture is set to World or it may not enable the anisotropic filtering.
You could also try changing the MipGen setting of the texture to one of the Sharpen settings. This will apply a sharpening filter to the smaller mips.