physics when killing enemies (The Elder Scrolls 5: Skyrim)

please do not throw slippers (thank you)
the essence of the problem is that when killing an enemy or nps there is no "collision" physics if it is magic or arrows, if it is a melee weapon, then the enemy simply freezes in the air and then falls to the floor in the same position.
I did not install any mods off the version of the special edition.