Ah sounds like my kind of strat lol, stacked vit healer would make this sooo easy.
Also yea in this game a lot of mobs have a set aggro range that will cause them to reset and go back to their initial positin if they r too far from u or if they r too far from their patrol area ( only a few special mobs do this)
Good to know, but try and post a vid as it seems pretty long im description.