Allright, then here is the first positive feedback. From me, the Ubi hater.
Truth is, I have not enough time to test it, only 1 hour of play.. raid start in WOW
So, all I did was to
remove all mods (hope everybody did this before playin the patched game!!!) and jump in the game. My last save was near a friendly port with no torps on board. So I refited and headed out to the sea on max speed.
First improvement I saw, my fps was way better in the interior of the sub. I have a single core cpu and I can say the fix for this is real, I can see now the water splash, explosions and all that stuff that was not designed for thse kind of cpu's.
The friendly AI is not tring to ram me when I'm close to a base, also they do their best to avoid hit the shore or other ships. Man the gun and flak gun works, also the morale system. This is not changed on save/reload, also the weather stay the same.
I had luck and I found very fast a big convoy and I ordered a blitz attack from the front side, sneaking between the escort ships. In the rush, I had no time to test properly the stadimeter, but it seems to work good, but Im not 100%. Anyway, once the right range is set up, the computer fails to track it as it does with the AoB. So right before I fire the tubes, a last range check is needed.
I hit on the bow a tanker and I had the surprise to see the ship sink after 5 minutes. This never happened before with the stock game. Before, the blasted ship or sunk right away, or was sailing without any floating problems. The escort ships reaction was good, only 4 DD from the 20 started to hunt me. This time they were smarter and few of them actually stopped right above me waiting for me to surface. But soon as I dived under 150m they lost my track. Now.. I'm not sure if this is still a bug or is the real deal. I have the Albreicht coating so maybe this helps now to get stealth when entering under 80m.
Overall, I'm excited and sadly I have no time to test it properly now. WoW calls, so I have to go, I will test more tomorrow :P