Division 2, try using a strong pestilence build with Ambush global modifier on and farm Escalations. I should be doing over 5 million a tick now or close to it, will stream some on the meta version later and see what it can do now. Why this is so good is you light up an enemy and the plague spreads after a kill getting stronger, you can literally sit in cover not doing a thing and entire phase will be wiped out often. This is very meta for solo play during Ambush global event because you can hide and let pestilence kill off everything.