I believe it’s Hab Dreyko, where you do an investigation then run through hordes to your pick up site eventually over some pipes, after scanning two rounds near a corrupted tree.
Just before reaching the dropship at the end, myself and potentially party members will disconnect from the game, and luckily after manually reconnecting we can get back in and get in the Valkyrie to end the mission.
I have seen this multiple times in the same spot whether it be partied with randoms from matchmaking, or friends in my strike team. Doesn’t seem to matter. In strike team we were all on voice in discord and explained the same thing. Disconnected from the match, but not a game crash.