I have the same problem.
SH5 (non steam), Generic File Patcher, Wolves of Steel V2.0, Enviroment15.
VIIa Uboat is fine on surface, and can run decks awash.
The moment batteries are required the aft section sinks, and the bow section floats. At a speed less than 2 knots, the boat dives rear first. At +2 knots the boat pushes through to the surface.
I have tried manually adjusting aft and bow planes, to no avail.
I managed to get the VIIa back to port, thinking it was damaged, just to start the new patrol with the same problem.
Is the only solution uninstall, clear registry, reinstall?
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