# Understand Step Duration Calculations in Scenario Editor

Use this article to choose and interpret AIQ step-duration metrics such as DOM Complete, Server Response Complete, Full Page Loaded, Script Time, Ajax Time, and Next Step Ready.

## Validation workflow

1. Select the timing option that matches the question being answered: browser timing, user-perceived step time, or SPA readiness.
2. Compare AIQ output with browser performance timing only for browser-provided metrics.
3. Document the selected timing option when sharing reports so reviewers interpret duration values correctly.

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Last updated: September 29, 2026