I’d have to imagine certain scenes would just be super emotionally taxing for the whole crew.

That’s pretty much true. Sometimes actors even quit a role because it becomes too much. There are always exceptions of course (for example shows with many seasons where everybody on set already knows each other well) but especially with method actors the mood of the scene is usually also the mood that’s present during the shoot. With theatre it’s even worse because you need to get into that role again and again. Takes a certain type of character for that.