Totaly personal preference For me it removed all stutters and pauses, but did make some sounds rather delayed. Like a clay pot I picked up and smashed took a second or two before the sound played. All the command does is stop the engine waiting(why it simply freezes for a second) untill the sound is ready to be played. If you had very bad stuttering and would prefer to have some delayed sounds but smooth gameplay, then use it. Personally I found I didn't need it after defragmenting(hadn't done it for over a year :naughty