I have Shivering Isles installed with a bunch of official plug ins (Knights of the Nine), and the SI patch doesn't offer the ability to choose the performance level in the launch option. Is it gonna mess up the game if install the official Oblivion patch instead of the SI one? I require to play my game on very low, where everything looks all bright and crappy, and you can't do that in options during the game as well. Only the official Oblivion patch does. It seems like a downgrade if they didn't offer that option.