Why is this game so -Yoinking!- laggy?

Title. I’m in Europe, and the game is unplayable in the current state for me.
I’m having more lag than actual game-play in matchmaking. I’m getting full >3 seconds of people running into walls during almost every firefight.

P.S.
No, it’s not my internet, every other game is fine, but not this game. Also, I play on Xbox series X.

I don’t know if it’s lag persay, because my latency and frame rate indicators show it’s steady, but my game too definitely gets choppier and choppier the longer i play. In some matches I streamed to friends and interestingly they say the quality is smooth and they don’t notice the choppiness. Although they point out that a few times the fps indicator does show i have a drop in frames significantly for a few seconds. I really don’t know what to make of it.