Honestly I see no challenge in BG3 fights in terms of AI, pre and post patch 5. Plus, now every enemy is obsessed with dash it is even easier. They just throw themselves to my blade.
I create my own challenge instead. I keep reloading the fights in order to see how quickly I can kill the enemies.
I hope it is an EA issue. Fingers crossed...
It would be helpful if you could say a bit more.