So now I have played for several hours and no CTD of any kind, i had friendly taskforce destroyed ships infront of me and Luftwaffe sink ships that was mine
But few things that caught my mind,
first the sonar guy, he's working but it seems that he finds target and double report it, then he loses it and finds it again and this "loop" continues forever til I surface or getting out of range
Second a lot of orders I give are always double repeated from the crew like engage batteri recharge
Over all everything works like a charm so thank you again all modders and vdr1981