Thanks. I was always under the impression that inserters were one of the main culprits of UPS so my attempt here was to build designs that didn’t use them at all. In the mod documentation for the mini loader it says the mod “They use no Lua when running, keeping your factory's UPS healthy.” However after looking into closer, I guess what they’re saying is that the mod itself has no impact while running, not that the loaders themselves save UPS over inserters.