This is a tough exam. There are no short cuts and its very time pressured.
You need to have your plan set in stone before you go in e.g 20 mins planning and 40 mins writing. It sounds simple but you have to take on board the new scenario information, figure out what technical models to use, align it with the pre-seen and then plan your answer in 20 minutes incorporating the four competencies.
On top of this there is a lot of distraction in the room with people tapping noisily on keyboards and other professions finishing their exams coming in and leaving at different times.
You are stressed from the beginning. In previous exams if you had a brain freeze on a question you could leave it til later when you were more at ease and usually the information came to you then. In this exam, once the hour is up there is no going back.