So I can host games perfectly fine, I have my ports open, etc. When I host a game, there is no lag at all but when I join someone else with at least 3 or 4 players, i'm the reason the game lags. My internet speed is 100 Mpbs, connected through ethernet. I've had these issues over the years and sometimes I didn't because I used to move to other places and I guess the connection was different. How can I fix this?