have you got mipmap settings or some other lod setting turned right down in your graphics driver control panel?
Don't think so. It looks normal when I use the pre-configured ultra setting but when I use custom it messes up. I've tried messing with the texture settings in the config GUI so I'm guessing it's something to do with a config file somewhere. I'll probably just use the Ultra config as I only wanted to use custom to see how it looked maxed out and see how many frames I got with my new GPU .