Hello! EA_Claus - I don't know if there's any chance of you seeing this, but I've posted about this same issue myself. Also an Xfinity user, running into massive packet loss (on both PC and PS5) - specifically when playing ranked on anti-DDoS servers (with the pentagon icon next to the server ID). I'm in central New Jersey, but two friends I play with regularly (we're all day one players) in the same region who have different ISPs don't have this issue at all. It never happened to me before the last few months. I've detailed my experience at the link below.
I checked in with Xfinity (with whom I have the highest level internet package) and they said it was an EA issue. I've replaced all my equipment and have no issues with any other service or operation on my devices. It does not happen at all in Pubs or Mixtape - and only when I rank up Plat 1 and above. There's definitely something going on between Xfinity and the Apex servers. If there's anything the team can do, there's many of us who would appreciate it. Thank you.
Extreme packet loss when playing ranked on Xfinity internet | EA Forums - 13555625