Short said sam
running multiple instances at the same time will not work for the reasons the person above mention.
but camping various mobs sites at the same time coudl work. but keep in mind that its respawns time and most camping spots got random mobs also. including casters that attack from distance a few lucky hit could cause one of your team to die and you gotta spend time ressing and souch.
but if you configure the setup and have a good overview over everyting i think it will actually work if you are a bit carefull that is
Silver