Honestly, the career mode AI is full of ****. Did I really spend 60€ on this thing? Playing at elite level now and all the discussed differences have shown up to me. And it's not only rally mode where AI does not suffer at all from bad weather conditions, same bug is also present in RX mode. Only the cars in your group are affected by weather conditions. I'm a bad driver/player but the difference is sooo clear. The game has been out for over a month so this kind of issue should have been fixed long time ago. And how on earth is it even possible, was the game playtested at all before release?