Another of Everyone family here. Rotate external camera and the smoke goes.
More annoying for me are the flickering textures in some ships. I didn't find a solution yet.
This last night my TWoS works alone (I was sleeping and the PC was left working) for eight continuos hours in navigation from Kiel starting Happy Times. The boat is now in Helgoland. I selected a trip in populated zones for test with traffic. No CTD. All working fine.
Regards.
Fitzcarraldo