Hi Sven, the viewports are pretty tightly connected to the GPU so one thing
you might try to see if it has any effect is go to Options > General > "Edit .ini file" button.

Find the setting GraphicsAPI=Auto inside the [View] section and try with these:

GraphicsAPI=Direct3D11

Then try:

GraphicsAPI=OpenGL

And also:

GraphicsAPI=Direct3D9


I think it's possible to have the older wine-10.11 build set up in a separate wine prefix if that version works better.

- Michael