with [item=bulk-inserter], up to 785.6 items/sec (13.1 [item=turbo-transport-belt] belts) with [item=stack-inserter,quality=legendary], up to 3840 items/sec 3.1 sec to switch trains 20 stack. USE 1-4 INSTEAD 50 stack. USE 5-8 INSTEAD 100 stack. train per 20.35, 4.16 sec. can do nonstop trains 200 stack. train per 40.71, 8.33 sec. can do nonstop trains