Grim Dawn - Octavius Kalastor Tactician - Crucible 7 min
Could have been perhaps under 6:40 if it weren't for Armored mutator and Lucius hugging a plant. A more aggressive version of the newly revamped Octavius set that went for Oleron/Boar devotions. Although Vire versions can do similar kill times.
GT: https://www.grimtools.com/calc/M2gD1WBV
GT no green ring: https://www.grimtools.com/calc/xZy45bwV
Original forum post by Veteranga: http://www.grimdawn.com/forums/showth...
The MI version is just a bit more expensive but worth it for most of your stats. You can move points from cunning to physique if you want a round 12k HP.