I understand that you are talking about the DnD, but I just want to say that this is a simple fight. I killed gnolls with first try, and boss too. This fight is much easier if compared it with Spider fight, which took me a really long time, just because I needed to understand 'web' mechanics. Maybe it shows the difference between DnD players and not DnD players. Your perception of the game can influence your battle strategy. Hmm. Because players who don't know DnD rules play with what they have and consider it normal.
I don't mind if Larian make game "more DnD".
I am going to redirect this. I played 5e for a few months before BG3 came out and still had my ass handed to me in several fights, starting with the first goblin fight, but including the spider queen fight, the gnolls, and the ~!@#$%^&*()_+ githyanki patrol. So it isn't just 'know 5e' - there are enough differences in tabletop and computer gaming that knowing the base rules is probably less than half the battle.
My look at it is: Options are power; know your options and use them. Explore every game mechanic and see what happens. And keep learning and experimenting. This isn't my best post:
Clearing the Deck: Killing Everything on the Bridge, but if you read it, the point is there are a good half dozen solid techniques you can use even against powerful enemies. Some of them are pretty much straight 5e abilities; some of them have been changed by the transition to a computer game, and some of them are only in the computer game.
And there are enough flat-out exploits that, if you just want to chew through fights to explore the world and get to the story elements, it is possible. But you have to find them and figure out how to use them. I took out all of Blighted Village except the ogres with one imp (my party was hanging back near the druid grove), just to verify it was possible. I could have done the ogres too, but the fight took long enough as-is; I was getting bored enough to start making mistakes. Then there's shoot/hide, 100% chance of throwing enemies (circumstantial, but manipulable), shoving things into bottomless pits, and other exploitative combat tactics.
Seriously, Larian, the enemy needs some way to deal with invisibility; otherwise, when we can finally get Greater Invisibility, it will be possible to walk up and just keep wailing on things until they die, no tactics or strategy needed. "I killed an ancient dragon using a dagger" sounds fantastic until you realize it was an hour-long boring grind because the dragon wouldn't attack or move.
