Nobody can provide a solution. Thats how the internet works. At least ea is transparent and wrote an article to explain how the internet works. I know I’ve tried to explain it to you before. Your isp should have explained it to you when you contacted them.
You even say the other person doesn’t have delay. So while ea is fixing animation delay and others next year will have no delay this won’t help you. You are experiencing something on your end.
Now it maybe your connection but you checked it with your isp. So it’s likely you live far away which ea has explained and you isp should have. Shame on your isp for failing you. It could also be on your setup also explained by ea.
You saying others don’t experience it says it’s on your end. If this was an ea issue everyone would experience it.
So it’s two things it’s on your end and you can fix it or you live to far away and that’s how the internet works.