Xfinity and Ps5pro wired

Both hardwired and wireless. Both a static and dynamic IP addresses. With or without port forwarding. With or without putting the PS5 in DMZ. Using XB8 as the gateway And it’s stilll terrible. But the techs come and say evryrbting is fine more than fine “actually getting more than you pay for” which is nonsense cuz every game online feels slow delay sluggish or unresponsive it’s like I have a invisible person holding me down every game I play and aim assist is zero it’s like I’m on a mouse with no aim assist! I’ve tried everything and nothing helps. But if I go down thr street to my friends (Xfinity) it’s smooth and normal. Or I’ll go to my brothers (att) and it’s normal fast smooth. I’ve did the stateful all that and nothing changes. I’ve talked to countless “agents” countless reprovisions countless new modems and they all turn off or glitch and disconnect for a 2 min period then come back on and it gets worse