What have happened to the AI?

I have been away from the game a couple of months, come pack, got Death on the Vistula, and started playing again, BUT now the AI has become useless: it seems it sends all its cheapest units forward first, hardly try to recapture lost victory points/flags, and looses the game pretty fast. I mean before on Ostrowno, playing as Germany, I used to have a lot of trouble with IS 2s and massive infantry attacks made by the AI playing the 84th Guards Rifles, but now all fight have gone out of the AI. What has happened???