Naw it`s very true m8, I`ve got GR3 installed at home, when u bring up the gfx options u can make all the speed changes u can imagine u`d want to, but the highest texture quality is not the highest available cos my card only has 256m.
It`s patched `n stuff. I do know u can go into the settings and physically edit to get the highest textures, but if u make anymore changes ingame, u have to edit them again.