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Most likely the situation with , WOI , Real VHF low band channel 5 , is multi-path.
Reflected Tv signals bouncing all around off of buildings and trees.
Moving multi-path , moving trees , moving air planes , moving cars and trucks , and other moving objects that reflect Tv signals , is not good for reception.
It can help to change the height of the antenna and also to change the location of the antenna.
Also the super wide spaced elements of the HD8200U do a good job of receiving multi-path.
A more compact Big antenna does a better job of not receiving multi-path , rejecting multi-path , a narrower beam width antenna.
Antennas with narrow forward beam width are ,
www.antennacraft.net , HD1850 , and Winegard HD7084P antenna.