They are timed in such a fashion that, if PlayTime was irrelevant or fixed at 2.5-3 second intervals, we would see 4 synced explosions, then 5 synced explosions then the final boom. Yet the capital ships do not explode in such a fashion in-game.
Also, the make mesh invisible time works
My capital ships explode exactly same what you said above since ver 1.0 vanilla.
I was thought like you until I notice the unreasonable truth beyond this nonsense that I coundn`t notice whole 3 months of modding.
You should check again yourself.