I have had that issue with the fuzzy line. It appeared on both the the Series X and the PS5. I'd read somewhere that other people were having the same issue and one person had fixed it by unplugging their TV for a short amount of time. So I unplugged my TV from the socket and left it for half an hour and when I plugged it back in the issue was gone. I've read that some people have had it return but it hasn't happened on mine yet.