The problem is not just with the DLC. It's ADDING the DLC to an already unstable game.
^ This, so this.
DG is not the problem, Skyrim is.
Beth have a serious problem of their own making, their useless PS3 anti "performance patches"!
Skyrim
v1.0 is smooth, has detailed textures and solid FPS whereas
v1.7 is lagtasic, muddy textures (there has been a visible nerf here) and has really poor FPS, this comparison was taken from a new installation, new save and at the exact same point in the game (character creation to escape) .
They now want to overlay DG on top of 1.7? That's never going to work. Never! They need to go back a few patches, overlay DG and then re-add subsequent patch fixes and see what sticks but I am doubtful they will ever get it to work, you see they nerfed the game on PS3 so much to reach patch v1.7 that there's no overhead left to use.
There's a fitting adage from the British Army, it is the 7 P's:
Piss Poor Planning Promotes Piss Poor Performance.