I'm not very techy so I apologise if this is a dumb issue. I have a 4K monitor with a resolution of 3840 x 2160. However, if I play above 800 x 600 the top two inches of the screen are chopped off. I've tried in full screen and windowed mode but it's the same. I tried taking screen shots but when I paste them they're entirely black. As an example, when you close the game, the 'thanks for playing' message is cut off the top of the screen.
I'm using Windows 10 Home 64bit, NVIDIA GeForce GTX 980 Ti, 32gb ram and a 4.0Ghz processor. The PC is coming up to its third birthday
![Razz :P](./images/smilies/icon_razz.gif)
I tried disabling the scaling thing but it made no difference.
What resolution should I be using? Thanks,
![Smile :)](./images/smilies/icon_smile.gif)