Getting kicked while nothing happend

Lately since we have been liberating Oshaune my friend gets kicked out of my lobby after 10 minutes, even though i didnt kick him and he didn't leave, and he doesn't get sent to his ship, he continues the mission from where he was "kicked" but just without other players. Has this been happening to anyone else? This is only been happening recently and neither of us have internet trouble with other games just Heldivers.