Salute, Anvar!!
GWR
Addon 21.2
Just completed a patrol with no additional mods. Loaded with SH Commander. Sept. 1941, Type VIIC from Brest.
A couple of observations: I really like the better weather behavior with changes that don't just happen rapidly. The graphics of clouds and the sea are really well done.
However...

At no time did the sky ever become completely overcast. Even during the heaviest rain with lightning and thunder, there was much blue sky. Of course, that does happen, but there was never a heavy cloudy day or night.
The view of the horizon looks the same regardless of the visibility. Even foggy, poor conditions had the partly cloudy skies and what seems to be a good distance of seeing. Of course, ships sightings did behave correctly for the reported conditions. Foggy conditions should probably be completely grey.
Was attacked three times by destroyers.. Never did they set their depth charges to detonate deeper than about 20-30 meters. They did have ASDIC and more than once they seemed to have a good "fix" on me down deep.
The little UZO button does not work. Even when pressing shift+U and deploying it that way, if you switch to another view and press the little UZO button nothing happens.
The bridge watch never donned their heavy-weather gear even in the highest wind and rain. Surfacing into storm conditions or moving them inside and back to the bridge had no effect. I have read on other posts about fixing this, but I figured you may wish to know...
Also.. hydrophone doesn't work at periscope depth. Have to drop down a few more meters for it to function.
AD