welcome to the forums
well, we use the same textures for the screenshots as we use in the game

we have no use of faked textures.. or would that make you buy Fleet Operations? ;-)
Some of the models (like the canaveral class you choose) are old models from the first modeling phase, which will be replaced.. as you can see in the beta2 changelog we always replace models of old vessels with new ones, but we cannot make them all for one beta ;-)
I don't know what got you that angry about Fleet Operations, calling all its textures ugly, but i think it is no hardware error, cause your screenshot looks ok.