While running a heuristic evaluation, is there a recommended number of tasks? I'm struggling with the scoring part. Do I perform all tasks, take notes of the problems and then identify severity based on all problems from all 3 tasks?
In this very good article, from uxmastery, they suggest using 5 tasks: https://uxmastery.com/how-to-run-an-heuristic-evaluation/
But I think what really matters is how you rank the tasks, so you can really focus on the ones that are more critical.