Does your laptop also have integrated graphics? If so, check the nvidia control panel and make sure the game is set to use the GeForce graphics (
screenshot).
I assume your changes to graphics settings included texture quality?
Black texts of the earth during the battle - I'm sure there was a duplicate Steam discussion that went into a bit more detail with the solution, but I can not seem to find it... email supportdc@larian.com, with a description of the problem and a link to this topic, and they should be able to help.
