After a few hours of troubleshooting, even updating my graphics card, I exhaustively went through my mods list on a new installation.

I was crashing at the end of every full turn, when the last squadmate would do the cinematic movement. Disabling action cam had no effect.

In the tutorial this would happen on the female move after they both leave full cover, before the explosion at the very beginning. It also occurred on the last move in a regular turn on a regular mission.

If you are having crashed disable this mod first.