Thanks for your replies!
I have installed the TDW FX mod again and, the ship behaviour is better, much better!
Just a couple of comments about FX mod: ships are not shaken violently when hit by torpedoes, listing to one side is still marginal - needs to be much more pronounced like in HMS Bahram youtube video and like it was in SH4 (is it possible to "borrow" code from previous SH and "inject" it into SH5?), immediatly after impact, there is hardly any immedate listing.
There are also some bugs:
Pay attention to completely separated bow of the ship - can it float like that?
Some time later, it still afloat!