Okay so, my black ops disc is scratched right, And so i used my brothers Black Ops disc to install it to my hard drive. Once that was done i played it with my scratched disc, but when i started the game the game play was choppy and laggy, and Took forever to load anything, i don't know why its doing this. even with any other Black ops disc it will do that, i don't know why.

It only does that when the game is installed, any problem why it's doing this?

Thanks.