Ok, I bought a new Nvidia graphics card and a new 34" Alienware 3440x1440 monitor...it can run at 120 Hz, but is only running at 105 Hz at the moment. I thought I overclocked it to 120Hz but apparently I didn't...when I tried to overclock it today I ran into what appears to be a design flaw: to get to 120Hz I have to use the custom resolution settings...but when I do change the settings to 120Hz I am given the choice of testing the new resolution or canceling the change. Testing only returns me to the same two choices...there is no 'apply' button. What am I missing here?