backup of game is sluggish

[NightRyder]

My friend extracted nhl 12 using multiman and then played it on his harddrive but the game was sometimes sluggish when we gamed. I was wondering do you have to do anything once you extracted the blu ray onto a harddrive in order for it to run smoother?

[ev1l51xty51x]

I've had the same problem with a few other games. Are you by any chance using the 'External game data' option in multiman?
Try it with this optoin turned off. That solved it for me.