GTA Games on Demand version - How does it perform?

I noticed its on sale and I love having my games digital. I have 4 360s in my house and hate having to take discs all over with me. I heard this runs pretty poorly because its all from the HDD, has this been fixed at all?

You hate having to carry such a heavy game case across your suuuuper big house, and walk allllll the way over to your 360.

You need to go running.

Why the hell do you have 4 360s? They can't all be yours now, can they?

It's annoying moving games from one room to another