I really appreciate all the replies from everyone. Seems like Samsungs are particularly touchy with this issue. The 2018 Q series is wonderful TV with a wonderful picture, but I dont think it was designed with live TV as its main target audience unfortunately. Having said that, I was on with Samsung support today as my warranty is about to expire in desperation mode. They had me unplug everything and did a remote factory reset on the TV. Going through these steps , I was kind of rolling my eyes because it seems like the tech playbook when the problem is not known. Well tonight something has changed, I have automotion OFF, but the PQ is definitely somewhat better on the problem channels of TBS, TNT, Lifetime, USA, etc with original 24fps content. The other really odd thing is that now my Samsung soundbar is much louder and to a better level with directv. I have no idea what could have improved the situation. The latest firmware had already been downloaded a few weeks ago, but could rebooting and resetting everything effectively "activate" firmware? That is all I can think of. Maddening to not know what has caused this improvement. I doubt it was a change of Directv signal?