There are 2 times when I place down the Palace of Swabia, and the game just crashed without notifications. It does not happen with other landmarks. Please check if this landmark is bugged or with excessive meshes.
I am running LEGION 7 with R7-5800H, RTX3070 LAPTOP, 32GB RAM which should handle the game.
Also, it would be great if developers could consider adding a re-connection function.