UseCorpseLifeSpanMultiplier=VALUE (The higher the number, the longer your bag will stay there)
You can also use GlobalItemDecompositionTimeMultiplier=VALUE (This will increase the timers for all loot bags, whether it be dinos/vaults/players!
Hope this helps.
OMG thank you so much!! this goes in the game settings ini right? not the game ini?
It goes in Game.ini.