Test is done with 120 hz BenQ monitor and 10" 60 hz monitor. Test # 1: - Bios setup, Primary Graphics Adapter > PCI Express, IGPU Multi-Monitor > Disabled. - Windows Resolution > 1920x1080 @100 hz. - rFactor 2 video setup, Resolution > 1920x1080 > Resolution > 120hz, sync > Video, Mode > FullScreen. -In-game resolution > 100 fps. Test # 2: - Bios setup, Primary Graphics Adapter > PCI Express, IGPU Multi-Monitor > Enabled - Windows Resolution > 1920x1080 @120 hz. IGPU monitor > 1920x1080@60 hz - rFactor 2 video setup, Video > Nvidia Geoforge GTX 1080Ti, Resolution > 120 hz, sync > Video, Mode > FullScreen - In game resolution > 60 fps. My conclusion is that full screen in single monitor is not working. Factor 2 is running in windowed mode when full screen is selected. DX11 has also 20% decrease of performance vs DX9 with latest Beta build.