True, but I don't think it's a big issue. I haven't even noticed that in way more than 100h into the game...
Heavily dependent on your party makeup, your builds, the type of equipment RNG loot has blessed you with, and how an encounter plays out. Problems don't stop being problems just because some of the players aren't experiencing them. Otherwise we might as well just wipe the developer's bug list clean and call it "job well done". I play multiplayer, have zero interest in using AI personalities when playing solo - doesn't mean getting them in wasn't important.