I dunno if this is related, but in CHEL I had some issues one day: during outdoor 3v3 dropin EASHL game, the top of the screen had some thin horizontal lines flickering in it, and then a bit later the entire top part of the TV screen flickered into black and out of it. It was very disturbing and got me worrying that maybe my PS5 or LG OLED C1 were going bad.
Also, back in the dressing room the green smoke effect thing kept flickering in and out... So I quit playing. However, the next time I launched the game, everything worked ok, and in fact I've havent' had any graphic glitches whatsoever after that. But it got me nervous, I haven't had any issues like this with other games at all.