Bluescreen whilst playing "Alliances" (Delta Quad mission)

Happened twice now so am running Force Verify before restarting - not at same point in mission. First time was helping Seven with the Octanti and the insane Borg Cube (just after punching full impulse to get to the Octanti group) and second helping the Doctor with the Hierarchy (as I was hitting my abilities ready to fight the fake Voth Bulwark).

Anyone else getting this? There was an overnight period between occurrences without logging into the game, and no bluescreens today whilst doing other stuff, so might be a graphics card only issue or something about this one mission....