Very helpful, thank you so much. Here's the translation to english for the lazy :)

"Doing the following fixed the issue for me with the game not displaying correctly in 4k resolution.
1. Go to the folder where the game is installed and where its executable is.
2. Select the executable file, right click and properties.
3. Go to the compatibility tab.
4. Click on "change high DPI settings" below.
5. Click on "Use this option to correct scaling problems with this program instead of Settings"
6. Click on "Override high DPI adjustment behavior. Adjustment made by: Application".
7. You accept and apply.
That's it, when you enter the game you can select the resolution you want."

Wow, after translation I was able to actually see the full screen instead of zoomed in, thanks a lot for your help, I couldn't find the solution anywhere else on the internet!

Muchas gracias. Mi salvación xd

que crack muchas gracias

grazia :D