Gameplay slow and lag online 1 to 1

I don't understand why in 2025 the game is slow and choppy in the 1v1 online game? we have the impression that to move forward we have to break the joystick! the last version that was going well was 2023 in this game mode. since then everything has been going wrong. and it's probably not my internet, I'm connected directly with a 1 gigaoctet package with 11ms why does easport have so much trouble putting programmers in this game? 
my Xbox is x serie