Hey guys, I had problems with the game, but found the solution. So maybe someone has the same problem and this could help, it was so simple:

The problems was:

- I couldn't run the game with 1920x1080, this would cause a black screen, lower solutions worked

- stuttering with constant 60 fps while moving around

Solution:

- switch full screen to window mode, this allowed me also my normal screen solution

Hope this will help someone!