That why Cal and PWizard told to keep Super Damage disabled and should be reserved for tough boss that you can't beat, or took long time to beat.
You may need to reload the save or load last save, so it should return to normal.
You can leave God Mode on as long as you want.
Are you activating it where and when the instructions say to as admin?
[Edited by CyPHeR369, 10/14/2018 11:07:31 AM]