potential fixes
Add friction to physics simulation, so bodies no longer slide down an entire mountain as if the floor were glass and the body weighed several tonnes
Add an anchor on the body to one of the feet, this means the body can slump fairly naturally but will not end up several meters from its original death coordinate, this will however cause strange bodies when people are killed on ledges or towers as they may end up hanging upside down by their foot. they will however remain lootable.