Got up at 5am this morning to catch a tailwind both ways.  30km/h out and 5km/h back low down.  Would have been an amazing flight, but DJI said no.  I've been on .900 the whole time and never an issue, but today my usual spot became a NFZ. 
While the winds changed for the worse, I was busy switching to .700 and patching 4.1.9.  Determined to at least do some testing I went out in horrible conditions to  test various speeds, and moving the RC downrange.  Landed 8k short where the road conveniently intersects the flight path.