Right Click your desktop, select settings, make sure you have 32bit color, then go advanced, on the trouble shoot tab, ensure that hardware acceleration is Full, on the monitor tab, make sure your refresh rate is ok, by starting of at 60Hz, then going up, until you hit the problem, (if 60Hz works fine).
Also, depending on you video card, make sure AntiAlaising is off, and vert sync is off. I always choose the midddle setting, which is application preference for most things.
May not help, but its an idea.
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