Full screen mode won't turn on (Dark Souls 2)
Full screen mode only works on a monitor frequency of 60 hertz, for those who have 120 hertz (like me), the game will only run in windowed mode.In general, whoever has video cards from nvidia and the refresh rate of your monitor is higher than 60 hertz, then we do the following:
Open the nvidia panel, then open the resolution change, press the settings button, create a custom resolution, set the refresh rate to 60 hertz and save. After that, we set the custom screen resolution that you created for example 1920 * 1080 60 hertz and the game will go in full screen mode. In this case, no cord transfers are needed, for example, from display port to hdmi or dvi.
Who has AMD video cards, then go to the Windows screen resolution settings, click advanced options, then on the monitor tab and change the resolution to 60 hertz.