It is preferable to have the resolution exact in all monitors OR have the largest resolution in monitor 1.
Do the following for setup:
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Align the image's top Edges.
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Preferably, make monitor 1 the primary display.
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Make the monitors either in a horizontal row or otherwise in Logical order.
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Make the mouse move nicely on the monitors.
Some older TV models won't show the full PC image automatically.
Adjust this and readjust the monitor order afterward.