That's one of the major reasons the N64 has a reputation for being 'blurry'. 4k gives you a max of (with mip maps) one 32x32 16-bit texture at a time.
That's one of the major reasons the N64 has a reputation for being 'blurry'. 4k gives you a max of (with mip maps) one 32x32 16-bit texture at a time.