I think they hit a good balance of environmental effects compared to 5e and D:OS - I'd have been disappointed if it weren't in at all, since that is something Larian's known for, but it's also a lot more reduced in scope compared to the D:OS games - the entire floor isn't awash in blood and acid and other effects in every combat.
On that note, I hope there is no equivalent of the Blackpits fight, where everything is on fire.
