It was peak from the beginning up to the Shougo fight. I dropped it when Shougo's dojo-mate jumped him. It was understandable for Yuu's anxiety to have caused him to cower and lose focus previously but if the mangaka thinks he can pull this shit again and again with Yuu mysteriously forgetting how to fight against baddie of the week, sulk/train/soul-search, and then beat him for 100 more chapters, he's wrong.
Good luck on continuing Berserk, Mr. Mori.