Hi. How fact table optimization feature works? I want to know details, and impact on user side.

Hi Simon, This feature works by combining multiple fact‑table metrics into a single SQL query this saving money. Usually, each metric is queried separately but with this optimization feature it's combined. There is no impact on the user side as this is a backend optimization feature that saves you query costs. https://docs.growthbook.io/kb/metrics/fact-metric-optimization