That’s because the glacial grenade (the shattering part of it) and the Fragment are the problem. It literally doesn’t matter how much you nerf Shatterdive, if the root problem isn’t properly addressed then nothing will change. Hell at the moment the Titan slide combo will achieve the exact same result as the Shatterdive combo. That should be enough to tell you that the issue in this combo is not Shatterdive, but the grenade itself and/or the fragment.