If your chosen settings would result in more than 100 sub-pulses, Aurora will ignore them (though it should still advance time). If you do not select a sub-pulse length, Aurora will use its defualts.
Your statement does make 0 sense.
Pulse 1h, sub 1h -> ship doesnt use auto commands
Pulse 3h, sub 1h -> ship does auto commands
The sub-pulse didnt change at all.
And the argument of "space stations dont move so they dont need armour, but moving ships do" is bad as well.
Not only from a mechanical standpoint/logic inconsitencies in the game, but also because you can tractor beam them, effectivly moving them.
Sincerely