I am currently using DB running T10/GR75 with Para level 1423 and using this build: http://www.diablofans.com/builds/79213-2-4-1-helltooth-garg-meta-solo-gr90
Getting about 90-100b/hour with NF+GF mix mode.
Using the lastest version of Trinity (2.41.41), and make sure use the following settings for Trinity :
1. In Combat -- Misc -- Trash Mob Settings - Ignore Trash further away than -- 5.0 (this wil temp fix the Soul Harvest problem, will keep 10 stacks of Soul Harvest which provide you enough toughness for face-tanking the mobs)
2. Uncheck "Extended trash-kill range after combat"
3. In Avoidance -- Ground Effect -- Select All
4. In Avoidance -- Advanced -- Measurement Radius -- 30.0
Just in case if I missed some settings above, I put my current Trinity setting profile in attachment. Put this to Db\Settings\Saved\ and then use the Import button in Trinity bottom left of main window.
View attachment 201882
Hopefully this can help you