Every game mode other than Garden Ops is on the EA servers, due to this, most of the connection issues happen on Garden Ops.
The problem with Garden Ops games is you're connecting directly to another player, making them the Host. If their internet is less than great or have some crazy strict NAT settings; the clients (you or anyone else) will have connection/latency issues.
Since there is no host migration, when the host leaves the game, you'll get the message "You've lost connection to the game session".
As PIckle stated, try hosting your own games to ensure your connection is kept.
hey overcloakdhamstr even hosting your own game you can still loss connecton it happened to me 4 times how no idea and no my internet did not die
