All cargo containers should have some sort of timer, that doesent allow other players to pickup my loot
Regular containers in open space (that contain modules, modifiers and weapons) are client sided - meaning that if you can see it then only you can pick it up.
Only containers dropped by seed chip enemies/Enclave enemies are unprotected. This includes:
Intact Containers
Container (seed chip)
Space Debris
Pieces of Equipment
If you are seed chip farming it is advisable to simply not kill enemies at range so you have time to go pick up your loot. This system is highly flawed and illogical but with the deveopers being so stubborn when it comes to quality of life and progression you simply have to work around it.