Death stranding get rid of online stuff

[SvennoJ]

I recently started playing Death stranding and it is just how I feared. A mess of random online stuff appearing, either making things more confusing or spoiling things. I tried to turn it off, yet even when restarting the game without being connected to the internet at all, the online post boxes, signs, ladders and other crap are still on the map. Is there a way to get rid of it or do I have to start a new game?