Can this be change via config file? This really needs to be changed. Half the time I am still in a fight clearing enemies and by the time the fight is over and I can loot the bodies, most of them (and even the drones) have de-spawned. Even if we can change this in config, the defaults are way to short.
No this is not something that we can adjust at all. It's been requested many times ever since the config file was added to the game. Maybe it will be exported at some point.