Finally got Forza 5 to install. I start playing game everything is working fine. Complete first race and continue listening to instructions after first race when out of no where the game to a screen asking for an update. It says the size of the update is 6GB... So I press start update. It then proceeds to reinstall the game like it had never been install before. I let it install and try to play again, but it just keeps asking me to do the 6GB "update" over and over again.