This by far the biggest reason why they shouldn't have even released this game on PS3. They don't set it up properly to run on the PS3, and if you play a certain way you get hit with a ton of crap. I have 3 characters, one played almost flawlessy to 50. Another is unplayable at level 30. Needless to say that really irks me. If you can't make an open-ended open world game properly on a console, then don't make it at all.
Anyways, recently I broke out a "classic" and all time great game, Metal Gear Solid 4. The trophy patch came out over the summer for a game that is 4 years old. Interesting that Kojima was able to do this for a 4 year old game, but Bethesda can't do it for a 6 year old game, all the while working on the sequel PLUS an open world game as well. Interesting. Then again, Kojima is a japanese company whose games have run solely on the PS3 for a while. Hopefully when they make this sequel and it's on the Xbox that the PS3 version isn't held back because of it.
It is small it what it can do, but you have to remember everything you're going to be customizing with that DLC is going to make the results of it very large.