Balancing a higher level dnd campaign is not hard. AT ALL. Been playing and dm for nearly 40 years. L0L So, don't tell me things I know to be false.
Do you use the official 5e encounter builder to balance your high-level 5e campaign, entering in *only* your party's level? Or do you balance encounters based more on your past DM'ing experience/intuition and, importantly, customized your specific party that you've likely been DMing for many sessions?
As a video game, BG3 would need to use set encounters that don't take into account party composition & tactical-know-how. Also, Larian doesn't necessarily have 40 years of DM'ing experience to fall back on, especially because they've modified the rules so much.
