How come when i adjust the settings they dont change in game..? example i turn off blood and even turn it off in the .lua file and when a bitter is killed still blood on the ground? seems the same to make the corpse disappear faster doesnt actually change

The setting removes not "pools of blood at death", but "splashes of blood at damage".
Regarding the time of the disappearance of the corpse - I put "10 seconds" on the tests, it works. I'm not sure that the setting will apply to existing corpses, but the new ones will definitely take it into account