So now that I've got my room within a room built I'm running the elctric and cables. I noticed that if the romex is to tight I get a noticable amount of flanking. When I tap on the inner framming it vibrates the outer framming. This effect is reduced if I create a longer runner with more slack in the romex.
My question is: what is the recommended way to run the romex and any additional cables through the wall to minimize flanking?