CTD at dunkerque?

[fo3]

I've been playing SH3 for the first time in years.
Running GWX 3.0 gold.
I know CTD was a big deal back in the day, but so far been playing for weeks without issues. Now up to patrol # 9 and the game keeps crashing at the same spot.

It's May 1940 I think, belgium has surrendered, Denmark shows up as axis too.
I was given a patrol in the north near norway, and during that time told allies evacuating from dunkerque.
So after I finished my patrol grid given I headed south.

Every time I get off the coast of dunkerque it slows down and does a CTD.

So has this happened to anyone else? Is it a GWX thing, a overload of traffic that should be there at that location.
Or after ages of stable play has something else gone wrong in my setup?
It's worth asking though if this has happened to anyone else, ie this exact same time and place.