To be fair, that is not a team that is very well suited for Game of Death. And it's a bug, not a nerf, so it should be back to normal soon.
My team autofarms Game of Death - Madness all day long while I work: Replay, Battle; Replay, Battle (with the occasional pause to delete talismans). Allows me to get through my trooper list as well.
Soldier Eddy
Pharaoh Sun Spirit
Magus Allied Soldier