Pass-rates for Advanced Performance Management (former P5) have always been depressing with no more than 33% successful attempts. However this is a great exam. First, it's not numerical, so you don't have to work with deviations, logarithms, etc. Second, it's one of the most relevant exams for your future career. Regardless wether you want to pursue your career in audit, financial management or reporting – you always need to know how to manage performance.
However the best benefit you can get compared to the majority of other courses is that your homework will be thoroughly commented