So, there's this battle attached to a sidequest where you get ambushed by a trio of enemies that had to be designed by Satan. At first it doesn't seem too bad: Roughly 9000 HP each when you can arrange it so you deal about 500 to 1000 damage every time you can? Perfectly feasible, especially since you can do it with AoE attacks. Now give them TWO seperate attacks that allow them to damage you and regenerate as much health as you just lost - and it deals 800 to 1000 damage, when even your tankiest character only has 5000 and the rest will have 4000, if not less. Well, you can still somewhat deal with this... It's a single target attack, so if you focus them down one by- What's that? They get to call in more of their kind when it's their turn? And there's no limit to how many they can spawn in?
No joke, I spent about half an hour on this fight, when even boss battles will rarely take more than ten minutes, before just ragequitting. Even with two hours of progress lost, I simply didn't have the patience to continue anymore.