I remember one of the devs addressed this in a recent post, I’ll see if i can find it. Basically the prediction window must be long enough to accommodate all possible latency, not just your personal latency, because we all play in the same universe. I think they said the prediction window was 1000ms.
I feel like there should be opportunity for local tuning though, like if everyone in my immediate area is under 250ms latency then the prediction window for us should tighten up. But it would probably be complicated to implement. And maybe the inconsistency of the window would be too frustrating for players (“Get out of here Jimmy, you’re making us lag!”)
Edit: found it