Shared World Crash

[Sparkathor]

My gf was hosting our saved world on Series X and I joined on PC. Played well until we started in the headgear and activated the resource analyzer thing for the backyard at the beginning of the Hedge Run. In the room the lights turned on after she hit the switch and was shown on xbox, however the lights in the room did not turn on when she hit the switch for me on PC. within 60 seconds the game crashed and neither of us have access to our shared world saves from this morning forward.