I want to report a weird artifact when playing LSH3_V5 (no other mod activated). In every mission that I've played so far, at one time or another ships are emitting double smoke columns (not multiple-stacked ships). One of these looks normal but the other is a very dense smoke colum that runs almost parallel to the water surface.
It was observed in every view screen (periscope, UZO, external, bridge) and when the camera is heading toward that artifact the FPS drops dramatically. Sometimes the artifact is seen even where there are not ships, like a cloud floating above the water..
English is not mother language so, it is difficult to me to express what I saw in clear English . I have taken a photo which you can see below:

I will try to get more pics of this unusual effect to further illustrate it here.
Does anyone know how to avoid this?
Thanks,
rea00cy