@Zelhyr the game has changed a lot, especially since patch 5.
Highground is now a bonus/malus, not a condition to win or die. Jumping as a bonus action doesn't disengage you anymore. I remember having a hard time too with the redcap and the minotaurs. I can't be sure because things are easier after so many playthtrough, but I think they've also rebalanced some creatures.
I don't think Larian is doing games for hardcore gamers but they really have a hard time at balancing their combats, especially because they have a hard time at balancing their custom mechanics with DnD (items included). The game can still be very easy if you abuse Larian's OP cheese, like in exemple shoving, dipping, barrelmancy and surfaces... but it's less visible than it was before because they listenned to players on important points and balanced/removed some of the bigger issues (highground and blackstab, jump and disengage).
There are still a lot of things to tweak to really have an interresting and balanced tactical turn based game imo... But patch 5 was definitely a huge improvement.