FTA quality is appalling at best. Watching it on a UHD OLED TV simply magnifies the problem.
Did you not ask to see some FTA content prior to your purchase?
Broadcast TV is moribund and will continue to go through it's death rattles by shoving more and more mindless pap through the 23 MHz bandwidth allocated to them.
Your old plasma TV took the rough edges of an already bad signal. A bit like Vaseline on the lens to cover up the wrinkles of the ageing starlet.
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