You can set the minimum pack size higher in the Trinity config and it will skip single monsters and smaller packs. But by doing this the bot can sometime struggle to complete bounties, for instance the bounties where you have to kill the monsters surrounding a node before the node becomes clickable. If there is one monster left at the node, the bot won't kill it if the minimum pack size is >1.
I've got minimum pack size set to 1, its a little slower but at least he completes the bounties.