Unplayable : getting disconnected after 1 min

I have come back to play DST offline alone. I have a few mods on my server (offline world, which should not require a connection). It played fine until winter (excluding a couple lags here and there). Although now, I cannot even play my server since I hop on it, play for one minute and get disconnected. It says ''Disconnected. You have lost connection to the server''. I restart it and try again - my gameplay has been rolled back to the start of the ingame day, then play for one minute and same happens again. I play DST through Steam, I tried validating the game cache, disabling information tracking and nothing seems to help.