I'm using a W4100 with a Dell UH2715H monitor at 2560 x 1440 @60Hz. Whenever there's and animation, hovering over a window, etc., the screen begins to jump and flicker with white lines appearing in the horizontal direction. If I step down to the next support resolution the problem disappears. I've tried downgrading the driver, but the results are the same.
I would like to be able to use the full resolution of this monitor, so how can I resolve the issue without buying a new graphics card?