System Map: When min inc is set to any non-zero numeric value but auto turns is not checked, it will suppress all interrupts and jump straight to the end of the selected increment (so if your pulse is 1 day, your increment is 30 days, and your min inc is 1, it'll go 30 days. If your min inc is 432000, it'll go 30 days).
Related: I've got a sub-pulse of 1 day, an interrupt triggering on every sub-pulse (two ships requesting fuel), auto-turns set and using increment of 5 days. I tried increment of 1, jump is 1 day. I try increment 5, the first 4 increments are 5 days, the final one is 1 day. So. . . . there is some use to the above issue.