Power BI Performance: 9 Fixes for Slow Dashboards

Star schemas, aggregations and DAX habits that turn a sluggish report into an instant one.

This article walks through the approach step by step, starting with how the problem was framed and which data was available. The goal is always the same: get to a decision faster, with fewer assumptions and a result you can defend in a meeting.

Why it matters

Most analytics work fails not because the model is wrong but because the question was never sharp enough. Before writing code, define the metric that should move and the decision that follows from the answer.

The practical workflow

Clean the data and document every assumption, explore before you model, keep the first version simple, and measure against a naive baseline. Once the baseline is beaten, iterate on features rather than jumping to a more complex algorithm.

What to do next

Try the technique on one of the free practice datasets in the study materials hub, then write up what changed. If you would like feedback on your approach, get in touch — I review reader projects regularly.