Automatic summarization of all measures, although useful in some models, it does not correspond to the exact storage or engine behavior being evaluated.

A tuning technique that targets refresh time rather than the interactive query latency discussed in the prompt

Combining multiple datasets, although useful in some models, it does not correspond to the exact storage or engine behavior being evaluated.

Pre-aggregated tables that are automatically used for queries when appropriate, improving performance

Grouping of visuals on a page, however, this points to a general optimization idea and not the concrete query execution mechanism tested in the question.