Make sure to use research tab for SIMs. Read the questions and answers carefully. When I took it I went through MCQs relatively quickly and went with my gut answer first. Then went back to re-read to double check based on re-reading the questions.
You can easily get through the MCQ for AUD in two hours… The key to doing well on MCQ is repetition and reading the question very carefully. I am horrible at multiple choice because I second guess myself and I take too long on questions I should just answer and move on. I still managed to get them done in two hours which is good enough to leave you two hours for the sims which I highly suggest because you can use the research tab to squeeze out any extra points. I found one of my sims word for word in the research tab and found many answers to others in the research tab as well.