I feel there is a threshold somewhere in mid-to late BG2 where how well you can manage the combat moment to moment starts running away from you due to the sheer amount of variables reaching critical mass resulting in completely whimsical bi-polar outcomes. This is only exacerbated in ToB where I would struggle with a fight at first, reload, only to do the exact same thing ending the fight easily within 5 seconds. So much stuff is happening in such a short amount of time it is too laborious to deduce what is going on and/or what went differently. It isn’t like random stuff doesn’t happen early but it’s mostly my ability to follow the combat is limited.
The final battle is the epitome of this where I had tons of summons, and so does the boss, with magic flying everything and every fighters is attacking 10 times in a single round. (that’s like 6 seconds) The screen is just covered in a colorful haze and the battlelog is like watching Internet packets flash by.
My attention is like butter spread over too much bread, and the bread only keeps getting bigger.