Rockstar just advised on its twitter page, that if you’re picking up the Xbox 360 version of Grand Theft Auto V, to skip installing the contents of the second disc. You’ll still have to install the 8gb of data from the first disc (and that goes for the PS3 version as well), but apparently, there’s some performance hindrance by installing the second disc for Xbox 360. Just what is it, we don’t know yet, but it’s a good thing finding out now, before the game drops in two days.