Problem of dead bodies that never disappear in Fallout 4

[adriancid]

It is a strange problem that occurs even without using any mod. All, or almost all the enemies that I kill, have in their reference object the letters [PP] at the end of the 8 digits. These letters mean "Promoted Persistence", so the bodies are not cleaned like the others as they should be because something is holding them there. I have found that almost all bodies stay where they fall, and never disappear.

I noticed it when I started using a mod to replace all creatures with synths (Replace any actor whit any actor). The bodies would stay there for days and days. I also used another mod that adds or replaces raiders (Raider Gangs extended) and the same thing happened. 

I thought it could be a conflict of mods, and then I decided to start from scratch, without any mod, and my surprise when I killed the first three radroach in Sanctuary was that of the 3, 2 had on their dead bodies the letters [PP]. I advanced to Concord and before arriving, I killed 2 Stingwing that had the same letters...

I read out there that the bug of the bodies that do not disappear was fixed by UFO4P, but in my first game, with the mods, I had it installed as well. The strange thing is that it happens every time, even without mod and starting a new game.

Edited August 3 by adriancid