ROFL, this is a funny story.

I realised I had my first campaign on very easy for this patch, I was thinking "That is weird.. I forgot to set it to VH".

I chose Prussia and I was thinking "Right, I will get a quick saxony, quick west prussia, hold off Poland while I do this and that".

So Basically first turns, I do that, turn 4, I was effectively eliminated.

Austria, Poland-Lith, Courtland, Denmark all declared war on me and Austria emplyed a big army, taking out brandenburg garrison (only had 2 horses, two militia, general and two cannons defending, since I had my mine army in Saxony), Poland-Lithunia, managed to do the same stunt and take out East Prussia. I was left with Saxony province which was red/red and in uprising with a half-a-stack army.

I was screwed over instantly. This AI isn't taking any stick now.