First bug: Underwater ... if I go into the water and dive everything I see is grey

Second bug: Shadows in third-person view ... if I walk through the landscape (for example a forest) and the trees have no shadows or the shadows look unreal ... and if I move, the shadows change very quick

Third bug: Shadows in first-person view ... the shadows in that view look real, but they also change ... f.e. While standig everything is ok, but while running areas get shadows and if I stop the shadows disappears


Are there any ways to fix that bugs?

The first bug is actually, in Bethesda's mind, an "improvement".

I have no problems with the other two "bugs".