Aha! I found the cause. I think.
I disabled the option for "Automatically turn on game mode" in Chromecast settings and suddenly the picture became about a hundred times better. Now I'm not sure why this did this, as if I reenable it and the other settings I can't make the picture bad again.
Maybe it was just a classic case or turn it off and on again.
Last edited by Ceritops; 13/10/20 02:02 AM.
