This may be a strange question but, how do you stop what seems to be every biter on the map from attacking at the same time? We have tried turning AI: Enable Raiding AI off as that looks like the most likely candidate but we still get attacks that seem to come from the entire map at once and we can tell when it's coming because we loose all the frame rate. it's to a level that I'm not even sure how you would survive with vanilla and Rampant AI being the only things on the map.
This may be silly question since we are playing with pyanodons mods too but thought it best to check :)
Edit: we just rushed a base quickly and we seem to have "reset" AI to reconsider sending the whole map to us
Edit2: Okay that didn't stop them for long...
Thanks