Why does custom report differ from QA results?

Within Insights, it is possible to create customisable reports across a range of data points by selecting various metrics, filters and dates/times.

As the report is configurable, as are the ad specifications that are used to QA assets, it is important to be aware that if the report and the ad specification differ the results shown may also differ.

For example, within the custom report, it is possible to select Initial Load Bytes (Total).

This may return a different Initial Load Byte value to a QA result where Exclude all Javascript is selected, as the report and the QA are comparing different elements of the tag to calculate the Initial Load.

Custom reports are best used to give an overview of a wider set of data, rather than as a specific comparison of an individual assets' QA result.