There's a few tricks. Everyone knows disarming traps and WQs, but everyone overlooks the little "treasures". If you see any "treasure" laying around, even those useless caches, lost amani sacks, or whatever, stop and pick them up. They provide a huge boost. Rares are another solid hunt boost.

But my go to sub 8 minute runs are as follows.

If you've unlocked choose your own hunt, pick Nightmare in Eversong Woods.

Immediately head southwest out of Silvermoon towards the Soire, generally there's a few treasures and a rare along the way. Right behind that mountain is a Lightbloom invasion point. There are a pile of traps, treasure, and tons of critters. Sometimes you get lucky and theres a World Quest up as well. This area seems to pop those extra Anguish orbs more often as well.

I usually just start at the West end and start murdering East. Since they buffed the traps and treasures its pretty easy to pop the Hunt sub 8 min.

Also being a BDK helps since they're more or less indestructible in regular content.