AMD CCC Custom resolutions

Archean_0-1354672

Honorable
Jul 5, 2013
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10,710
Using and Intel and Nvidia (i7 & 560m 3GB) setup, I can set my monitor (ASUS VE248H) to 2560 x 1600. On another system which uses and AMD CPU & GPU (FX-8350 & R9 280X 3GB), I can only go to 1920 x 1080.

+Why is that?
+Where is the custom resolution setting for AMD CCC?
+I have tried using regedit to add resolutions, but they do not show up in AMD's CCC or the windows resolution panel.
+The ASUS VE248H's native resolution is 1920 x 1080, but I know that it can go up to 2560 x 1600.
+"Hide modes that this monitor cannot display" is greyed out

Thoughts?