....understand- there are always tradeoffs with every current display technology. The C8 uses black frame insertion to deal with motion handling. It is not ideal, although a tad better than the previous model(s).
In summary your cable or sat provider is not the only issue (but compressed feeds don’t help either).
Check out the dedicated AVS thread for your model so you can compare notes with others. Look here:
I've been having some problems with my TVs for over a year now. I have lived in my house for 4 years - for the first 3 years, the TVs worked just fine. About a year ago, I cancelled the cable. I went without cable for a few months and then I decided to get Direct TV. Around the time of the Direct TV installation, I had some electrical work done (100 --> 200amp panel upgrade, 240 volt line run for a hot tub, and 2 electrical lines run for window A/C units). I also had two new garage doors installed. After Direct TV was installed, I noticed severe blurriness when watching sports. Whenever there is a lot of motion (e.g., basketball players running up and down the floor), my TV screens get really blurry. This is happening on all 4 of my TVs and it doesn't matter if I'm watching on the cable box or streaming the content...it's always blurry. When the camera zooms in on the players and there isn't much motion, the screen looks perfect. Also, there are no problems when I'm watching blu rays, playing videogames, or watching shows on Netflix.
I have tried three different cable providers (Spectrum, AT&T Uverse, and Direct TV). I experienced problems with all three and none of these companies were able to address the issue - they all sent technicians out multiple times and none of them could fix the problem. I tried purchasing a new TV (LG OLED C and I experienced the exact same problems on the new TV. I had multiple electricians come out (thinking it could be an electrical interference issue) and all of them were stumped....they couldn't help me.
At this point, I'm at a loss. I have no idea what to do. It's as if I live in this strange black hole where I'm simply unable to watch sports. If anybody has any theories or suggestions, I'd greatly appreciate it. Thanks!