Hi mex00277 ,
Please check if you have met these Considerations and limitations：
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The app displays results for the last 14 or 28 days, depending on the visual.
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The app only displays memory measurements and performance breakdown for datasets.
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The app only supports monitoring datasets that use import mode. To monitor Power BI service live connections use Azure Analysis Services.
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The Users column in the visuals displays the number of distinct users that performed operations against the dataset. These operations may be performed by the users themselves, or by Power BI on behalf of the users. When reviewing the visuals in the app, take into consideration that background operations performed by Power BI, may inflate the count of unique users.
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Operations triggered by users - Interactive operations that include opening a report or clicking a slicer.
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Operations triggered by Power BI - Background operations that include system operations such as dataset or dataflow refreshes. Sometimes these operations are performed by Power BI on behalf of a user. For example, a refresh operation may execute background queries to cache tile results for users who viewed these tiles recently. The tile refresh cache queries provide a much faster performance for users, when they next view the dashboard.
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Best regards.
Community Support Team_ Caitlyn