This fight is extremely easy if you only send one character down to talk, and keep the rest of your party at a height advantage. If you just King of the Hill it, and give the party member who went down a misty step scroll to get back to high ground, you will have no problem taking them out just like King of the Hill combat works in all the other fights. Heck, I soloed this fight with Astarion using a high ground ranged attack + hide combo, where none of the enemies knew where I was after my turn, so they just skipped their turns, rinse and repeat.
You are basically saying "it's easy if you cheese the fight leveraging well known exploits".
Well, no shit. But that's not particularly flattering for the encounter.
