LAG ONLY ON APEX RANKED

I really need help to this problem so literally only on rank I lag but everything else like trios and duos, etc.. I am playing perfectly fine but when I get on rank, I lag really bad. I even have a whole new council wich i got an ps5 pro and play with LAN cable even got a new Wi-Fi box and still am lagging only on ranked. I really need help fixing this because honestly all I really play is ranked and it’s really annoying.