TFt screens don't need a high refresh rate since the image lasts longer on the screen.
Likewise, TFT screens are slightly inferiour to CRT for gaming as the moving image can blur a little.
I use the SDM-S71R screen (17 inch) which runs at a standard of 60hz refresh. I did not need to install any software, although a driver disk was supplied.
Trying to run the resolution at different setting will give difficulties with reading text. These screens prefer to run at their default settigns.
If you have problems with flicker or blurring, you can adjust this. There is a section on this in the screen manual. If you use the utility disk, there are specific test screens which allow you to optimise the vertical and horizontal settings.
If you have not got a utility disk, pre MENU on the screen, then the DOWN arrow until you see the RESET option. Select this and the screen will return to default settings.
