I'm having a bit of an issue in my current game. I'm playing difficulty 7, expansion enabled, no minor factions and default settings against what turns out to be two zenith descendant AI's. Things are turning out pretty good, though a bit slow, just past the 10 hour mark. I made a bunch of raids and destroyed a group of AI worlds in a row that I wanted to capture.
When attacking, when I entered the AI system, immediately a wave indicator popped up saying that about 200 tech 3 zenith chameleons incoming in 1 minute to ???. After 1 minute, chameleons didn't show up, but a huge blob of random zenith ships. I don't understand why the raids were tech 3, as my AI progress was 275, only enough for tech 2 raids. But I figured this is normal, the AI is defending itself.
Anyways, I left the system after destroying the command center. But the AI kept sending waves. Every 3 minutes, it would send 200 tech 3 ships to a system I didn't own. It was ok at first, but I can't handle these constant waves and eventually started losing planets. I eventually gave up, as there's no real way I could make a comeback with the wave spamming.
Is there any reason why the AI would spam waves to a system I don't control with high level waves? There was a broken golem in the system, but I don't own the system. I just need to know what I did wrong so I don't get caught in this trap next time.