What results in a "Frustrated" Apdex rating?

A "Frustrated" Apdex rating occurs when user interactions or actions exceed a predefined threshold for acceptable performance, significantly impacting user experience. In the context of the options provided, user actions that experience JavaScript errors directly lead to a frustrating experience for users, as these errors can prevent actions from completing successfully or degrade the user interface's responsiveness. When a user encounters JavaScript errors, it often results in delays, disruption of functionality, and an overall negative perception of the application, which is precisely what the Apdex metric aims to quantify.

In general, while user actions taking more than a certain amount of time can also contribute to frustration, the impact of a JavaScript error is more immediate and tangible. Similarly, exceeding the maximum number of user actions might indicate a different issue related to user load or scalability rather than direct user experience deterioration. Website downtime has severe implications, but in the context of Apdex metrics, it is generally a separate measure of availability rather than a frustation indicator based on action-specific performance.