Loot Rates are turned down a lot by the standard SPT-AKI - I think with:
"GlobalLootChanceModifier" : 0.23
"LocationsLootChanceModifier" : 0.8
For me using a mod like ANDRUDIS-QOL-CONFIGURATOR or ALLINONE MOD and tweaking the spawn rates fixed this (I'm using ANDRUDIS-QOL-CONFIGURATOR with "GlobalLootChanceModifier" : 1.3 and "LocationsLootChanceModifier" : 1.1).
Maybe this helps.
- keep in mind that those mods are still for the older version of SPT-AKI and I haven't tested them on the new update.