(I made this post for another topic, but decided to tweak it and stick it where it was on-topic)
I hear that Baldur's Gate III deviates from the core rules of D&D 5e from time to time, but it never made sense to me, and when I google something like Baldur's Gate III D&D 5e, I mostly get results about how it's very similar to 5e, and keeping to most of the rules though having some differences. Examples include these three articles:
(Yes, I'm relying on outside articles, mostly because I don't have any experience with D&D on the tabletop. Call it what you want.)
Lover of non-haughty elves and non-smutty lesbian romance "1404. I will not spoil the adventure's mandatory ambush by using the cheesy tactic of a "scout"." - From "Things Mr. Welch is no longer allowed to do in a (tabletop) RPG"