Quote - I already told you, the recommended one whichever that is.  I'm pretty sure the recommended setting is the exact same no matter what version of windows the person is using.

Recommended isn't a size.   My monitors for example, are recommended and are 1920 x 1080.  But they are wide screen monitors.    I suspect it's the CSS viewports causing your problem, but without knowing what you are running, I can't verify that.