The only way to change the resolution is in game, you press the ` key to open the command console, then type in the command, r.setRes 1920x1080f (or whatever your computer's resolution is). I honestly don't understand how this happened to you, if you have older hardware, the game may not run properly. Also, what are your PC's specs? Do you have an old PC?
But when i open the game this crashes instantly. I dont have time to press the button becuase this crashes :(
I has a samsung PC
1.50 Ghz Dual Core Intel Celeron
732 MB of Memory video
64 MB of Dedicated Memory Video
2GB RAM
450 GB Disk Space
Intel HD Graphics
Max Resolution: 1366 X 768
That is my Pc specifications
I have an idea, if the game has the maximum resolution and the maximum graphics, You can put the minimum resolution and the minimum graphics (by default), so that people can adjust to the resolution that their PC can support. Just upload the game with the resolution and minimal graphics. Here I see how I adjust the graphics: D