Hello

Recently i got viewsonic g90f monitor in good shape with perfect brightness so im using it with resolution 800x600@140hz but i read that it it support 1024@768@118hz which i cant achieve. When i select 120 hz it says out of range and there is no option for 118hz , i tried standart drivers and from viewsonic . But there is no option for 118hz . So does it possible set 118hz or get proper drivers? Exact model is g90f-4.