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Apple TV Video Flickering with Dell Monitor

I have a Dell W4200 42" monitor.  I am trying to connect the new Apple TV to it and the display keep flickering.  I have reset and replaced the device.  Does anyone know what setting needs to be adjusted to stabilize the image?
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You can try the following:

- Set the Dell's Refresh Rate to 60Hz
- Set the Dell's Refresh Rate to 50Hz
- Set the Dell's Resolution to 720p
- Try a different HDMI cable

Let me know if any of this fixes your issue