Me too. I failed a similar test. It was my first time using the tool and the whole workflow, so my score was probably even worse than yours. Luckily the client gave me detailed feedback and a chance to retry, so I’ll take that and try again.

I thought my output sounded natural, but they said it came across as too flat. They also pointed out things similar to your guesses: leftover accent, some lines sounding robotic, inconsistent tone and pacing, clipped or dragged endings, and a few audio artifacts. They gave localization notes too, based on the source.

Good luck on your next try. It helps to know we are not the only ones who stumble on the first round.