Instant vs Range queries for single-value Stat panels

When configuring a Stat panel in Grafana to display the most recent metric value, there is a choice between utilizing an Instant query or a Range query with a specific calculation applied.

Instant queries are designed to return the latest value for each series at a specific timestamp, which minimizes the data payload sent to the browser. Conversely, Range queries retrieve all data points within the selected time window, relying on the interval variable to manage the volume of returned points before the panel performs a reduction (such as 'Last' or 'Max').

The primary constraint is balancing dashboard load latency and browser memory consumption against the need for potential historical context or specific aggregation logic.

• Does an Instant query provide sufficient flexibility for panels requiring a calculated value based on the most recent window?
• Under what specific data density conditions does a Range query with a reduction become less performant than an Instant query for single-stat visualizations?