A few days ago I got the Asus VG248QE 144hz monitor. I connected the monitor with a DVI cable that came with the monitor. I turned on 144hz through the Nvidia control panel. A few days later, yesterday, I bought another one of these and set that one up. On this new monitor, I used a DisplayPort to DVI adapter and then used the DVI cable that came with the monitor. When I went to the Nvidia control panel to change the hertz to 144, there was only the 60hz option. How do I fix this?