I setup a game with Tough - no AI randomization. I did CTRL+N a few times. About two hours into playing I started to wonder why the AIs weren't very active, but due to spacing I really only had one near me, and they weren't doing anything (except maybe drooling). So I check, and they're all at Fool level of intelligence.
I'd heard there was a bug in campaigns where CTRL+N caused AI levels to drop with CTRL+N. This was a "sandbox" game, and I'm sure I set it to Tough with no randomizing.
In that same game, I was playing as the Yor and didn't have the ability to colonize barren worlds (which I didn't notice til a good ways in either due to there being none near me).
When's the next patch? I'd really prefer not to waste hours playing just to find out the AI has magically degraded.