I'll tell you guys how to tell the difference between low texutres and the high textures you should be getting...

Simply look at your character... Firstly, pull up a shield if you have one. See the inside of it? Ok, next... look at your character in the third person perspective. Make sure you zoom in close to have a look. Right, this is where you get to see your item of armour or weapon in the high resolution texture model.

Go into the menu and simply unequip the armour piece, for this example let's use a shield. Remember, take a look at the inside of your shield first by pulling it up infront of you in first person view. Right, now press B, go into the menu and unequip your shield in the APPAREL menu. Now, go back to your character and check him out without the item. After you've done that, you must go back into the APPAREL menu again and equip the shield in this example. Right, now exit to your character and pull the shield up again in first person view. You see it?! Right... quite a difference, eh?

The same thing can be achieved with every item of armour. However, upon doing it twice to a second item, the first item that was returned to a high texture setting will once again be dropped to a lower texure setting.

There we go. Hope I was of some help.