with [item=bulk-inserter], up to 960 items/sec with [item=stack-inserter,quality=legendary], up to 960 items/sec 3.1 sec to switch trains 20 stack. 3.33, 3.33 sec per train. can do nonstop trains 50 stack. 8.33, 8.33 sec per train. 1.39 sec to load 100 stack. 16.66, 16.66 sec per train. 2.77 sec to load 200 stack. 33.33, 33.33 sec per train. 5.55 sec to load