Loose and static loot multipliers dont seem to work, at least at 1000 times loot and 1000000 limit there doesnt seem to be any difference that i can see.
In case of mods interference i only use this one, allinone and basuro back to 12.11.
ok so I have managed to speak to the Devs about this and the going's on behind the code,
there is a point where going higher will NOT do anything, its all based on the number of spawn points for loot
for example, if you get 200ish items spawn with a 1 multiplier, 2 multipliers you'd expect around 400ish items, if the spawn points for loot are available, this does not allow LootOverlapping. so once the spawn points run out, there cannot be more items spawned.
now there is a mod that "fixes" loot overlay, assuming you want more than total spawn points, but this will mean things will spawn inside each other, ETC
so to note: you could be hitting max items spawning at like a 50 multiplier, or even 4 I have not tested it to that extent, so I don't know where it stops (the max)
so it's not broken, its how the loot system was designed
the Dev i spoke to might get around to looking at the overlay option when he can, but with it not being a normal option for Live it might not be implemented into AKI