I've had it with Millcreek

[RillIris]

Oh and another issue that contributes is the labels some studios use, if they aren’t perfectly smooth then when stacked the label on top of one disc can act like sandpaper to another. I note this as some actual cases don’t actually elevate the disc off the plastic of the case even which is absurd but is what it is, but you don’t usually see scratches anyway because the plastic is a perfectly slick surface.