AI eventually gives up?

So I recently bought EE hoping the AI would be a bit more stable than the original and it has improved in many ways but the biggest issue for me has stuck around - some AI stops doing anything after a while - their villagers keep going but their armies just stay in their base and a win is easy.

This is happening more than it ever did in the original game for my allies. So many games they will advance to mythic and then after while they just hide. I try sending them resources (like a lot) and sometimes it'll get them to punch out another couple groups but a lot of the time it's doing nothing. It's especially bad on islands but I know the reason is due to them running out of wood. Othertimes I can see no reason why they'd stop.

I have AOMod which I hoped would make things more challenging but I still have the same problem with it too :( I read that it works like that on moderate AI but hard also ends up doing the same.