yup same problem this is the only one matter i cant continue my campaign, i tried to let them set foot on the planets with more units to increase the casualties, this doubles the time you have to the next attack but the CIS continues its suicide attacks

They constantly raid you until you clear the space above your planet or exhaust all their forces. And knowing their cheap, low quality, fast-based production methods, that will be a while. On the bright side, you make them waste their money.

Yes, it is kind of stupid that you can't build an assault force because they constantly invade. But you can't ruin their space forces unless you build an assault force. It's a paradox.

i know this is late but if you have venators available, merge them together, get them a support fleet and then put your corvette or jedi if he has a fighter as the commander of the fleet (the yellow box). then you find their fleet with that single ship you brought in and you bring the venators with the support fleet right on top of them, you fire all batteries and use the sphat lasers on the venators and you should decimate their fleet whilst losing some ships in your support fleet. now if theres more than one lucrehulk in this fleet, dontdo this as you will be overun with fighters most likely but if theres only one you should be good but you just risk losing possibly one venator