It feels like there are check windows with the end trigger on this missions as I keep hitting the same set of finish times. 3:21 is so far the quickest window ive managed to get, it feels like the next earliest would need to be a 3:26.

Route is the same as before, just got a little lucky with the Dreadnaught not getting swamped in orks.

See YouTube comment for a few more details, but this route is fairly self explanatory.